diff --git a/components/cycle-day/cycle-day-overview.js b/components/cycle-day/cycle-day-overview.js
index 13d43a4..839de29 100644
--- a/components/cycle-day/cycle-day-overview.js
+++ b/components/cycle-day/cycle-day-overview.js
@@ -10,6 +10,9 @@ import {
   mucusFeeling as feelingLabels,
   mucusTexture as textureLabels,
   mucusNFP as computeSensiplanMucusLabels,
+  cervixOpening as openingLabels,
+  cervixFirmness as firmnessLabels,
+  cervixPosition as positionLabels
 } from './labels/labels'
 import cycleDayModule from '../../lib/get-cycle-day-number'
 import { bleedingDaysSortedByDate } from '../../db'
@@ -41,36 +44,53 @@ export default class DayView extends Component {
   }
 
   render() {
-    const bleedingValue = this.cycleDay.bleeding && this.cycleDay.bleeding.value
     let bleedingLabel
-    if (typeof bleedingValue === 'number') {
-      bleedingLabel = `${bleedingLabels[bleedingValue]}`
-      if (this.cycleDay.bleeding.exclude) bleedingLabel = "( " + bleedingLabel + " )"
+    if (this.cycleDay.bleeding) {
+      const bleeding = this.cycleDay.bleeding
+      if (typeof bleeding === 'number') {
+        bleedingLabel = `${bleedingLabels[bleeding]}`
+        if (bleeding.exclude) bleedingLabel = "( " + bleedingLabel + " )"
+      }
     } else {
       bleedingLabel = 'edit'
     }
-    const temperatureValue = this.cycleDay.temperature && this.cycleDay.temperature.value
+
     let temperatureLabel
-    if (typeof temperatureValue === 'number') {
-      temperatureLabel = `${temperatureValue} °C - ${this.cycleDay.temperature.time}`
-      if (this.cycleDay.temperature.exclude) {
-        temperatureLabel = "( " + temperatureLabel + " )"
+    if (this.cycleDay.temperature) {
+      const temperature = this.cycleDay.temperature
+      if (typeof temperature === 'number') {
+        temperatureLabel = `${temperature} °C - ${temperature.time}`
+        if (temperature.exclude) {
+          temperatureLabel = "( " + temperatureLabel + " )"
+        }
       }
     } else {
       temperatureLabel = 'edit'
     }
 
-    const mucusFeelingValue = this.cycleDay.mucus && this.cycleDay.mucus.feeling
-    const mucusTextureValue = this.cycleDay.mucus && this.cycleDay.mucus.texture
-    const mucusComputedValue = this.cycleDay.mucus && this.cycleDay.mucus.computedNfp
     let mucusLabel
-    if (typeof mucusFeelingValue === 'number' && typeof mucusTextureValue === 'number') {
-      mucusLabel = `${feelingLabels[mucusFeelingValue]} + ${textureLabels[mucusTextureValue]} ( ${computeSensiplanMucusLabels[mucusComputedValue]} )`
-      if (this.cycleDay.mucus.exclude) mucusLabel = "( " + mucusLabel + " )"
+    if (this.cycleDay.mucus) {
+      const mucus = this.cycleDay.mucus
+      if (typeof mucus.feeling === 'number' && typeof mucus.texture === 'number') {
+        mucusLabel = `${feelingLabels[mucus.feeling]} + ${textureLabels[mucus.texture]} ( ${computeSensiplanMucusLabels[mucus.computedNfp]} )`
+        if (mucus.exclude) mucusLabel = "( " + mucusLabel + " )"
+      }
     } else {
       mucusLabel = 'edit'
     }
 
+    let cervixLabel
+    if (this.cycleDay.cervix) {
+      const cervix = this.cycleDay.cervix
+      if (cervix.opening > -1 && cervix.firmness > -1) {
+        cervixLabel = `${openingLabels[cervix.opening]} + ${firmnessLabels[cervix.firmness]}`
+        if (cervix.position > -1) cervixLabel += `+ ${positionLabels[cervix.position]}`
+        if (cervix.exclude) cervixLabel = "( " + cervixLabel + " )"
+      }
+    } else {
+      cervixLabel = 'edit'
+    }
+
     return (
       <View style={styles.symptomEditView}>
         <View style={styles.symptomViewRowInline}>
@@ -100,6 +120,15 @@ export default class DayView extends Component {
             </Button>
           </View>
         </View>
+        <View style={styles.symptomViewRowInline}>
+          <Text style={styles.symptomDayView}>Cervix</Text>
+          <View style={ styles.symptomEditButton }>
+            <Button
+              onPress={() => this.showView('cervixEditView')}
+              title={cervixLabel}>
+            </Button>
+          </View>
+        </View>
       </View >
     )
   }
diff --git a/components/cycle-day/index.js b/components/cycle-day/index.js
index 758fa1d..3d2ffde 100644
--- a/components/cycle-day/index.js
+++ b/components/cycle-day/index.js
@@ -10,6 +10,7 @@ import BleedingEditView from './symptoms/bleeding'
 import TemperatureEditView from './symptoms/temperature'
 import MucusEditView from './symptoms/mucus'
 import { formatDateForViewHeader } from './labels/format'
+import CervixEditView from './symptoms/cervix'
 import styles from '../../styles'
 import actionButtonModule from './action-buttons'
 
@@ -48,7 +49,8 @@ export default class Day extends Component {
             { dayView: <DayView cycleDay={this.cycleDay} showView={this.showView} />,
               bleedingEditView: <BleedingEditView cycleDay={this.cycleDay} makeActionButtons={this.makeActionButtons}/>,
               temperatureEditView: <TemperatureEditView cycleDay={this.cycleDay} makeActionButtons={this.makeActionButtons}/>,
-              mucusEditView: <MucusEditView cycleDay={this.cycleDay} makeActionButtons={this.makeActionButtons}/>
+              mucusEditView: <MucusEditView cycleDay={this.cycleDay} makeActionButtons={this.makeActionButtons}/>,
+              cervixEditView: <CervixEditView cycleDay={this.cycleDay} makeActionButtons={this.makeActionButtons} />
             }[this.state.visibleComponent]
           }
         </View >
diff --git a/components/cycle-day/labels/labels.js b/components/cycle-day/labels/labels.js
index 459370b..25909df 100644
--- a/components/cycle-day/labels/labels.js
+++ b/components/cycle-day/labels/labels.js
@@ -2,10 +2,16 @@ const bleeding = ['spotting', 'light', 'medium', 'heavy']
 const mucusFeeling = ['dry', 'nothing', 'wet', 'slippery']
 const mucusTexture = ['nothing', 'creamy', 'egg white']
 const mucusNFP = ['t', 'Ø', 'f', 'S', '+S']
+const cervixOpening = ['closed', 'medium', 'open']
+const cervixFirmness = ['hard', 'soft']
+const cervixPosition = ['low', 'medium', 'high']
 
 export {
   bleeding,
   mucusFeeling,
   mucusTexture,
-  mucusNFP
+  mucusNFP,
+  cervixOpening,
+  cervixFirmness,
+  cervixPosition
 }
diff --git a/components/cycle-day/symptoms/cervix.js b/components/cycle-day/symptoms/cervix.js
new file mode 100644
index 0000000..59d9d8b
--- /dev/null
+++ b/components/cycle-day/symptoms/cervix.js
@@ -0,0 +1,121 @@
+import React, { Component } from 'react'
+import {
+  View,
+  Text,
+  Switch
+} from 'react-native'
+import RadioForm from 'react-native-simple-radio-button'
+import styles from '../../../styles'
+import { saveSymptom } from '../../../db'
+import {
+  cervixOpening as openingLabels,
+  cervixFirmness as firmnessLabels,
+  cervixPosition as positionLabels
+} from '../labels/labels'
+
+export default class Cervix extends Component {
+  constructor(props) {
+    super(props)
+    this.cycleDay = props.cycleDay
+    this.makeActionButtons = props.makeActionButtons
+    this.state = {
+      exclude: this.cycleDay.cervix ? this.cycleDay.cervix.exclude : false
+    };
+
+    /* eslint-disable react/no-direct-mutation-state */
+    ['opening', 'firmness', 'position'].forEach(label => {
+      this.state[label] = this.cycleDay.cervix && this.cycleDay.cervix[label]
+      if (typeof this.state[label] !== 'number') {
+        this.state[label] = -1
+      }
+    })
+    /* eslint-enable react/no-direct-mutation-state */
+  }
+
+  render() {
+    const cervixOpeningRadioProps = [
+      {label: openingLabels[0], value: 0},
+      {label: openingLabels[1], value: 1},
+      {label: openingLabels[2], value: 2}
+    ]
+    const cervixFirmnessRadioProps = [
+      {label: firmnessLabels[0], value: 0 },
+      {label: firmnessLabels[1], value: 1 }
+    ]
+    const cervixPositionRadioProps = [
+      {label: positionLabels[0], value: 0 },
+      {label: positionLabels[1], value: 1 },
+      {label: positionLabels[2], value: 2 }
+    ]
+    return(
+      <View style={ styles.symptomEditView }>
+        <Text style={styles.symptomDayView}>Cervix</Text>
+        <Text style={styles.symptomDayView}>Opening</Text>
+        <View style={styles.radioButtonRow}>
+          <RadioForm
+            radio_props={cervixOpeningRadioProps}
+            initial={this.state.opening}
+            formHorizontal={true}
+            labelHorizontal={false}
+            labelStyle={styles.radioButton}
+            onPress={(itemValue) => {
+              this.setState({opening: itemValue})
+            }}
+          />
+        </View>
+        <Text style={styles.symptomDayView}>Firmness</Text>
+        <View style={styles.radioButtonRow}>
+          <RadioForm
+            radio_props={cervixFirmnessRadioProps}
+            initial={this.state.firmness}
+            formHorizontal={true}
+            labelHorizontal={false}
+            labelStyle={styles.radioButton}
+            onPress={(itemValue) => {
+              this.setState({firmness: itemValue})
+            }}
+          />
+        </View>
+        <Text style={styles.symptomDayView}>Position</Text>
+        <View style={styles.radioButtonRow}>
+          <RadioForm
+            radio_props={cervixPositionRadioProps}
+            initial={this.state.position}
+            formHorizontal={true}
+            labelHorizontal={false}
+            labelStyle={styles.radioButton}
+            onPress={(itemValue) => {
+              this.setState({position: itemValue})
+            }}
+          />
+        </View>
+        <View style={styles.symptomViewRowInline}>
+          <Text style={styles.symptomDayView}>Exclude</Text>
+          <Switch
+            onValueChange={(val) => {
+              this.setState({ exclude: val })
+            }}
+            value={this.state.exclude}
+          />
+        </View>
+        <View style={styles.actionButtonRow}>
+          {this.makeActionButtons(
+            {
+              symptom: 'cervix',
+              cycleDay: this.cycleDay,
+              saveAction: () => {
+                saveSymptom('cervix', this.cycleDay, {
+                  opening: this.state.opening,
+                  firmness: this.state.firmness,
+                  position: this.state.position,
+                  exclude: this.state.exclude
+                })
+              },
+              saveDisabled: this.state.opening === -1 || this.state.firmness === -1
+            }
+          )}
+        </View>
+      </View>
+    )
+  }
+}
diff --git a/components/cycle-day/symptoms/mucus.js b/components/cycle-day/symptoms/mucus.js
index f94a656..4a090d2 100644
--- a/components/cycle-day/symptoms/mucus.js
+++ b/components/cycle-day/symptoms/mucus.js
@@ -21,17 +21,17 @@ export default class Mucus extends Component {
     this.makeActionButtons = props.makeActionButtons
     this.state = {
       exclude: this.cycleDay.mucus ? this.cycleDay.mucus.exclude : false
-    }
+    };
 
-    this.state.currentFeelingValue = this.cycleDay.mucus && this.cycleDay.mucus.feeling
-    if (typeof this.state.currentFeelingValue !== 'number') {
-      this.state.currentFeelingValue = -1
-    }
+    /* eslint-disable react/no-direct-mutation-state */
+    ['feeling', 'texture'].forEach(label => {
+      this.state[label] = this.cycleDay.mucus && this.cycleDay.mucus[label]
+      if (typeof this.state[label] !== 'number') {
+        this.state[label] = -1
+      }
+    })
+    /* eslint-enable react/no-direct-mutation-state */
 
-    this.state.currentTextureValue = this.cycleDay.mucus && this.cycleDay.mucus.texture
-    if (typeof this.state.currentTextureValue !== 'number') {
-      this.state.currentTextureValue = -1
-    }
   }
 
   render() {
@@ -53,12 +53,12 @@ export default class Mucus extends Component {
         <View style={styles.radioButtonRow}>
           <RadioForm
             radio_props={mucusFeelingRadioProps}
-            initial={this.state.currentFeelingValue}
+            initial={this.state.feeling}
             formHorizontal={true}
             labelHorizontal={false}
             labelStyle={styles.radioButton}
             onPress={(itemValue) => {
-              this.setState({ currentFeelingValue: itemValue })
+              this.setState({feeling: itemValue })
             }}
           />
         </View>
@@ -66,12 +66,12 @@ export default class Mucus extends Component {
         <View style={styles.radioButtonRow}>
           <RadioForm
             radio_props={mucusTextureRadioProps}
-            initial={this.state.currentTextureValue}
+            initial={this.state.texture}
             formHorizontal={true}
             labelHorizontal={false}
             labelStyle={styles.radioButton}
             onPress={(itemValue) => {
-              this.setState({ currentTextureValue: itemValue })
+              this.setState({texture: itemValue })
             }}
           />
         </View>
@@ -92,13 +92,13 @@ export default class Mucus extends Component {
               cycleDay: this.cycleDay,
               saveAction: () => {
                 saveSymptom('mucus', this.cycleDay, {
-                  feeling: this.state.currentFeelingValue,
-                  texture: this.state.currentTextureValue,
-                  computedNfp: computeSensiplanValue(this.state.currentFeelingValue, this.state.currentTextureValue),
+                  feeling: this.state.feeling,
+                  texture: this.state.texture,
+                  computedNfp: computeSensiplanValue(this.state.feeling, this.state.texture),
                   exclude: this.state.exclude
                 })
               },
-              saveDisabled: this.state.currentFeelingValue === -1 || this.state.currentTextureValue === -1
+              saveDisabled: this.state.feeling === -1 || this.state.texture === -1
             }
           )}
         </View>
diff --git a/db.js b/db.js
index e2cf940..6fb743d 100644
--- a/db.js
+++ b/db.js
@@ -32,6 +32,16 @@ const MucusSchema = {
   }
 }
 
+const CervixSchema = {
+  name: 'Cervix',
+  properties: {
+    opening: 'int',
+    firmness: 'int',
+    position: {type: 'int', optional: true },
+    exclude: 'bool'
+  }
+}
+
 const CycleDaySchema = {
   name: 'CycleDay',
   primaryKey: 'date',
@@ -48,6 +58,10 @@ const CycleDaySchema = {
     mucus: {
       type: 'Mucus',
       optional: true
+    },
+    cervix: {
+      type: 'Cervix',
+      optional: true
     }
   }
 }
@@ -57,7 +71,8 @@ const db = new Realm({
     CycleDaySchema,
     TemperatureSchema,
     BleedingSchema,
-    MucusSchema
+    MucusSchema,
+    CervixSchema
   ],
   // we only want this in dev mode
   deleteRealmIfMigrationNeeded: true