hi everyone, so I’m back with more paranoia.

A while back when I was with my ex, in the course of our relationship we had unprotected sex and I don’t about 4 plan B’s. Sadly our relationship ended and my body seemed to be normal, my period was on time and I was okay. It’s been about two months about to be three and I began to overthink a lot and a took a test and it came back negative. Shortly after I had sex, protected this time with a condom and it didn’t break at all. But today is also the first day of my ovulation cycle according to this app. So with all of this being said, I just wanted to know if there is anything I should be worried about, pregnancy wise. I do apologize if I seem weird or anything but I’m very young and my first experience was horrible, it was very tough for me to get through so I just want someone to help me through this. Also is it normal for me to feel slight pressure on my ovaries or lower back after having sex since the last time?

Thank you