Redesigned version
1. Welcome screen where a user can log in or sign up. It is impossible to miss this step.
2. The app asks a user about her menstrual cycle, which is normal and expected. Yet the last question is not usual, as not everybody using the app takes medicine and this step confused me at first. I need to read the whole sentence and place "0". It would make the flow more smooth if a user could skip this step by pressing a button SKIP and not read the whole question.
At the moment pressing Cancel, I do not proceed to the next stage, I am taken back to the main empty screen.