I know we aren’t Doctors but I need some help from you beautiful people.

Post contains graphic details but not graphic pictures. We have been ttc for 3 months. My period was due to arrive yesterday. It was a no show for most of the day until after my SO and I had a rougher sexual encounter, I bled for like 5 minutes nothing to bad. No clotting. It stopped. Nothing, no residual bleeding and nothing today. Can anyone tell me what’s going on with me. I have a pretty regular period and I took a pregnancy test the day before my AF was due to arrive and the day of. Both negative. Please help.