Swollen after sex..?

I'm 34 weeks and Today my bd and I had sex for the first time since January because of some things. But at first it was going great and then it started to hurt. This is normal with him because he's pretty large, so we still finished trying different positions but none putting pressure on my stomach that I felt ot know of. But afterwards I was sore and swollen and my Braxton Hicks were a little stronger than usual. I cleaned myself and took a nap and it's probably been about 5 hours since we had sex but I'm still sore but now I also have a lot of discharge. It's not white or anything it's just a lot. To where it's going through my underwear to my pants and I'm not sure if I should be worried or not or what I could do to help with the swelling.?.??