I didn't know what category to put that in, but this will do.
On Valentine's, my boyfriend and I had sex for the first time in about three or four weeks, and we had it about three times between the 14th and the 15th. We also slept naked both nights, so when my urine was cloudy I assumed it was because I had a UTI because of this. But then it started to kind of burn when I urinated, and there would be a faint smear of pink on the toilet paper. Today I went to the bathroom and urinated again, this time there was small pieces of blood (whether it was tissue or not, I don't know) on the toilet paper. I've been going to the bathroom more often than usual since the 15th. I trust my boyfriend, we've been together for two years and we've never had problems, so I don't think for a second that he was with someone else or anything like that.
But I'm really worried and want an answer to this. I'm not on birth control and we used a condom.