Weird question

Tiffany

So I am 30 and trying to conceive I had my explenon bc taken out in April and have been using this app to track my period and ovulation cycle we don’t do it all the time but when we do we try to do it either on the day before, on, or day after the day i ovulate. So my question is we had sex the day before my ovulation day according to the app and 3-4 days later i started to have a almost like full sensation in my uterus. It doesn’t hurt and doesn’t feel like cramps I was wondering if someone could shed some light on this for me since I’m new to all of this. Thank you in advance! 🥰