Is this normal?

I believe I may have possibly had a chemical but I haven’t been able to have it confirmed yet (I have an appointment Friday). I stopped bleeding yesterday morning and my boyfriend and I decided to have sex. When I went to pee after, everything was fine and when I went a second time about 20 to 30 minutes later, I was bleeding and it looked like I started another period. I’ve also been swollen down there since Tuesday and noticed it was more swollen today. We weren’t being rough or anything.