itch.io

Well, it's hard to get her pregnant, but it prevents her from getting pregnant, However, the owner did send this to someone else, asking a similar question 

You can calculate your chance to unlock it like this: (number of times you finished inside her) power of 2= %.  For example:

• If you did it 8 times, it’s 8**2 = 8*8 = 64% chance
• And you can split it over 1 week too. Like:
  • Day 1: 4 times
  • Day 2: 4 times
  • After 7 days, the total is 8 times = 64%

Hi, thank you for playing! As Jienagamblu said, that’s the logic for pregnancy in the game. The afterpill clears all chances and, for 7 days, it won’t count any changes when you finish inside. So you’re safe during that time! Let me know if you have more questions!