diff --git a/components/cycle-day/symptoms/bleeding.js b/components/cycle-day/symptoms/bleeding.js
index 890df1b..ddb5795 100644
--- a/components/cycle-day/symptoms/bleeding.js
+++ b/components/cycle-day/symptoms/bleeding.js
@@ -5,7 +5,6 @@ import {
   ScrollView
 } from 'react-native'
 import styles from '../../../styles'
-import { saveSymptom } from '../../../db'
 import { bleeding } from '../../../i18n/en/cycle-day'
 import ActionButtonFooter from './action-button-footer'
 import SelectTabGroup from '../select-tab-group'
@@ -23,8 +22,14 @@ export default class Bleeding extends SymptomView {
     }
   }
 
-  save() {
-    saveSymptom('bleeding', this.props.date, {
+  symptomName = 'bleeding'
+
+  onBackButtonPress() {
+    if (typeof this.state.currentValue != 'number') {
+      this.deleteSymptomEntry()
+      return
+    }
+    this.saveSymptomEntry({
       value: this.state.currentValue,
       exclude: this.state.exclude
     })
diff --git a/components/cycle-day/symptoms/cervix.js b/components/cycle-day/symptoms/cervix.js
index 811cb2e..8ff4385 100644
--- a/components/cycle-day/symptoms/cervix.js
+++ b/components/cycle-day/symptoms/cervix.js
@@ -14,14 +14,22 @@ import SymptomView from './symptom-view'
 
 export default class Cervix extends SymptomView {
   constructor(props) {
-    super()
+    super(props)
     const cycleDay = props.cycleDay
     this.cervix = cycleDay && cycleDay.cervix
     this.state = this.cervix ? this.cervix : {}
   }
 
-  save() {
-    saveSymptom('cervix', this.props.date, {
+  symptomName = 'cervix'
+
+  onBackButtonPress() {
+    const nothingEntered = ['opening', 'firmness', 'position'].every(val => typeof this.state[val] != 'number')
+    if (nothingEntered) {
+      this.deleteSymptomEntry()
+      return
+    }
+
+    this.saveSymptomEntry({
       opening: this.state.opening,
       firmness: this.state.firmness,
       position: this.state.position,
@@ -95,14 +103,6 @@ export default class Cervix extends SymptomView {
           symptom='cervix'
           date={this.props.date}
           currentSymptomValue={this.cervix}
-          saveAction={() => {
-            saveSymptom('cervix', this.props.date, {
-              opening: this.state.opening,
-              firmness: this.state.firmness,
-              position: this.state.position,
-              exclude: Boolean(this.state.exclude)
-            })
-          }}
           navigate={this.props.navigate}
         />
       </View>
diff --git a/components/cycle-day/symptoms/desire.js b/components/cycle-day/symptoms/desire.js
index 6b690db..990b4f5 100644
--- a/components/cycle-day/symptoms/desire.js
+++ b/components/cycle-day/symptoms/desire.js
@@ -4,7 +4,6 @@ import {
   ScrollView
 } from 'react-native'
 import styles from '../../../styles'
-import { saveSymptom } from '../../../db'
 import { intensity, desire } from '../../../i18n/en/cycle-day'
 import ActionButtonFooter from './action-button-footer'
 import SelectTabGroup from '../select-tab-group'
@@ -13,15 +12,21 @@ import SymptomView from './symptom-view'
 
 export default class Desire extends SymptomView {
   constructor(props) {
-    super()
+    super(props)
     const cycleDay = props.cycleDay
     this.desire = cycleDay && cycleDay.desire
     const desireValue = this.desire && this.desire.value
     this.state = { currentValue: desireValue }
   }
 
-  save() {
-    saveSymptom('desire', this.props.date, { value: this.state.currentValue })
+  symptomName = 'desire'
+
+  onBackButtonPress() {
+    if (!this.state.currentValue) {
+      this.deleteSymptomEntry()
+      return
+    }
+    this.saveSymptomEntry({ value: this.state.currentValue })
   }
 
   render() {
diff --git a/components/cycle-day/symptoms/mood.js b/components/cycle-day/symptoms/mood.js
index bbaa2e4..5221deb 100644
--- a/components/cycle-day/symptoms/mood.js
+++ b/components/cycle-day/symptoms/mood.js
@@ -4,7 +4,6 @@ import {
   TextInput,
   View
 } from 'react-native'
-import { saveSymptom } from '../../../db'
 import { mood as labels } from '../../../i18n/en/cycle-day'
 import ActionButtonFooter from './action-button-footer'
 import SelectBoxGroup from '../select-box-group'
@@ -14,7 +13,7 @@ import SymptomView from './symptom-view'
 
 export default class Mood extends SymptomView {
   constructor(props) {
-    super()
+    super(props)
     const cycleDay = props.cycleDay
     if (cycleDay && cycleDay.mood) {
       this.state = Object.assign({}, cycleDay.mood)
@@ -26,12 +25,19 @@ export default class Mood extends SymptomView {
     }
   }
 
-  save() {
+  symptomName = "mood"
+
+  onBackButtonPress() {
+    const nothingEntered = Object.values(this.state).every(val => !val)
+    if (nothingEntered) {
+      this.deleteSymptomEntry()
+      return
+    }
     const copyOfState = Object.assign({}, this.state)
     if (!copyOfState.other) {
       copyOfState.note = null
     }
-    saveSymptom('mood', this.props.date, copyOfState)
+    this.saveSymptomEntry(copyOfState)
   }
 
   toggleState = (key) => {
diff --git a/components/cycle-day/symptoms/mucus.js b/components/cycle-day/symptoms/mucus.js
index 16e5529..0eee93f 100644
--- a/components/cycle-day/symptoms/mucus.js
+++ b/components/cycle-day/symptoms/mucus.js
@@ -5,7 +5,6 @@ import {
   ScrollView
 } from 'react-native'
 import styles from '../../../styles'
-import { saveSymptom } from '../../../db'
 import { mucus as labels } from '../../../i18n/en/cycle-day'
 import computeNfpValue from '../../../lib/nfp-mucus'
 import ActionButtonFooter from './action-button-footer'
@@ -15,16 +14,24 @@ import SymptomView from './symptom-view'
 
 export default class Mucus extends SymptomView {
   constructor(props) {
-    super()
+    super(props)
     const cycleDay = props.cycleDay
     this.mucus = cycleDay && cycleDay.mucus
     this.state = this.mucus ? this.mucus : {}
   }
 
-  save() {
+  symptomName = 'mucus'
+
+  onBackButtonPress() {
+    const nothingEntered = ['feeling', 'texture'].every(val => typeof this.state[val] != 'number')
+    if (nothingEntered) {
+      this.deleteSymptomEntry()
+      return
+    }
+
     const feeling = this.state.feeling
     const texture = this.state.texture
-    saveSymptom('mucus', this.props.date, {
+    this.saveSymptomEntry({
       feeling,
       texture,
       value: computeNfpValue(feeling, texture),
diff --git a/components/cycle-day/symptoms/note.js b/components/cycle-day/symptoms/note.js
index 06ee83a..08fac70 100644
--- a/components/cycle-day/symptoms/note.js
+++ b/components/cycle-day/symptoms/note.js
@@ -24,8 +24,14 @@ export default class Note extends SymptomView {
     }
   }
 
-  save() {
-    saveSymptom('note', this.props.date, {
+  symptomName = 'note'
+
+  onBackButtonPress() {
+    if (!this.state.currentValue) {
+      this.deleteSymptomEntry()
+      return
+    }
+    this.saveSymptomEntry({
       value: this.state.currentValue
     })
   }
diff --git a/components/cycle-day/symptoms/pain.js b/components/cycle-day/symptoms/pain.js
index 48eb15b..aa1c074 100644
--- a/components/cycle-day/symptoms/pain.js
+++ b/components/cycle-day/symptoms/pain.js
@@ -27,12 +27,20 @@ export default class Pain extends SymptomView {
     }
   }
 
-  save() {
+  symptomName = 'pain'
+
+  onBackButtonPress() {
+    const nothingEntered = Object.values(this.state).every(val => !val)
+    if (nothingEntered) {
+      this.deleteSymptomEntry()
+      return
+    }
+
     const copyOfState = Object.assign({}, this.state)
     if (!copyOfState.other) {
       copyOfState.note = null
     }
-    saveSymptom('pain', this.props.date, copyOfState)
+    this.saveSymptomEntry(copyOfState)
   }
 
   toggleState = (key) => {
diff --git a/components/cycle-day/symptoms/sex.js b/components/cycle-day/symptoms/sex.js
index 4d5c8e6..596e3c6 100644
--- a/components/cycle-day/symptoms/sex.js
+++ b/components/cycle-day/symptoms/sex.js
@@ -5,7 +5,6 @@ import {
   ScrollView
 } from 'react-native'
 import styles from '../../../styles'
-import { saveSymptom } from '../../../db'
 import { sex as sexLabels, contraceptives as contraceptivesLabels } from '../../../i18n/en/cycle-day'
 import { shared as sharedLabels } from '../../../i18n/en/labels'
 import ActionButtonFooter from './action-button-footer'
@@ -27,12 +26,20 @@ export default class Sex extends SymptomView {
     if (this.state.note) this.state.other = true
   }
 
-  save() {
+  symptomName = "sex"
+
+  onBackButtonPress() {
+    const nothingEntered = Object.values(this.state).every(val => !val)
+    if (nothingEntered) {
+      this.deleteSymptomEntry()
+      return
+    }
+
     const copyOfState = Object.assign({}, this.state)
     if (!copyOfState.other) {
       copyOfState.note = null
     }
-    saveSymptom('sex', this.props.date, copyOfState)
+    this.saveSymptomEntry(copyOfState)
   }
 
   toggleState = (key) => {
diff --git a/components/cycle-day/symptoms/symptom-view.js b/components/cycle-day/symptoms/symptom-view.js
index 4110d99..987a993 100644
--- a/components/cycle-day/symptoms/symptom-view.js
+++ b/components/cycle-day/symptoms/symptom-view.js
@@ -1,10 +1,21 @@
 import { Component } from 'react'
 import { BackHandler } from 'react-native'
+import { saveSymptom } from '../../../db'
 
 export default class SymptomView extends Component {
-  constructor() {
+  constructor(props) {
     super()
-    this.backHandler = BackHandler.addEventListener('hardwareBackPress', this.save.bind(this))
+    this.backHandler = BackHandler.addEventListener('hardwareBackPress', this.onBackButtonPress.bind(this))
+    this.symptomName = props.symptomName
+    this.date = props.date
+  }
+
+  saveSymptomEntry(entry) {
+    saveSymptom(this.symptomName, this.date, entry)
+  }
+
+  deleteSymptomEntry() {
+    saveSymptom(this.symptomName, this.date)
   }
 
   componentWillUnmount() {
diff --git a/components/cycle-day/symptoms/temperature.js b/components/cycle-day/symptoms/temperature.js
index f9de279..476d90c 100644
--- a/components/cycle-day/symptoms/temperature.js
+++ b/components/cycle-day/symptoms/temperature.js
@@ -9,7 +9,7 @@ import {
 import DateTimePicker from 'react-native-modal-datetime-picker-nevo'
 import padWithZeros from '../../helpers/pad-time-with-zeros'
 
-import { getPreviousTemperature, saveSymptom } from '../../../db'
+import { getPreviousTemperature } from '../../../db'
 import styles from '../../../styles'
 import { LocalTime, ChronoUnit } from 'js-joda'
 import { temperature as labels } from '../../../i18n/en/cycle-day'
@@ -54,7 +54,14 @@ export default class Temp extends SymptomView {
     }
   }
 
-  save() {
+  symptomName = 'temperature'
+
+  onBackButtonPress() {
+    if (this.state.temperature === '') {
+      this.deleteSymptomEntry()
+      return
+    }
+
     this.checkRangeAndSave()
   }
 
@@ -65,8 +72,8 @@ export default class Temp extends SymptomView {
       time: this.state.time,
       note: this.state.note
     }
-    saveSymptom('temperature', this.props.date, dataToSave)
-    this.props.navigate('CycleDay', {date: this.props.date})
+
+    this.saveSymptomEntry(dataToSave)
   }
 
   checkRangeAndSave = () => {