TMI question

Since a couple days after having unprotected sex on the pill I have been experiencing symptoms that I never have before. It started with what felt like a sore cervix and then there were some weird white tissue like particles in my urine? When I look this up everything says UTI, sexually transmitted disease, kidney stone, and pregnancy. I know for a fact I do not have a std and have no other symptoms of a UTI. My discharge has also been different then it normally is before my period. Also been having occasional cramps on my right side where I think is my ovaries. If I am pregnant we would have conceived on the 23, and I tested today and yesterday both negative I think. Help?!