Clue has not yet been optimized for use throughout pregnancy.
However, on iOS, you can temporarily pause Clue's calculations so your estimates are not affected, and resume calculations when you start having periods again.
Pausing calculations during pregnancy will ensure your averages stay useful.
1. Tap on 'Analysis'.
2. On the next screen, tap on 'your current cycle'.
3. Tap 'Exclude this cycle' at the top of the next screen.
4. Switch cycle exclusion on.
When you go back to the Analysis overview screen, the selected cycle will be greyed out. You will also see that your averages have been adjusted in the app overall.