Okay well, I've posted here before and I got a good responses everytime. I'm desperate for advice on this one.

Well as I've said on here before, the guy I'm dating now is the only person I've ever had sex with. The first time it hurt just a little and then went away after a few minutes and was fine. But we've done it much more than once now and every single time it hurts almost worse than the first time. The pain lasts for maybe 5 minutes or less, and always goes away as we keep going. There was also a little bit of pressure temporarily in the anal area for a few minutes. And everytime we finish, I get sore and irritated. Then I'll always make sure I urinate to try and avoid vaginal infections, and most of the time I notice a slight bit of blood on the toilet paper. Since I was sore after last night, I let myself breathe and decided to sleep without underwear to try and avoid a Yeast Infection. When I took off the underwear, I'd bled a tiny bit on them.
We never notice any blood during the intercourse, it's only on the toilet paper afterwards. I'm currently using the pill for birth control so I went to Planned Parenthood for a physical a couple of weeks ago. Me and my boyfriend have never used a condom, so they tested me for Chlamydia and Gonorrhea. When I went to pick up my prescription I had forgotten about the testing and so did the doctors and so I never got the results, but now that I'm reading about my symptoms I'm thinking that it could either be Chlamydia or Gonorrhea. I've got a wonderful and very understanding boyfriend, and I know that he'll be very supportive of getting me taken care of. I just need to know if anyone else thinks that this could be one of those two things, and what else it may possibly be. Thank you!