I am a nineteen year old female. I have been sexually active for about three years now and every time I start sex, I have to very slowly ease it in and I have to be on top. It's extremely painful and it is really difficult. Once it's used to it, I am able to withstand intercourse. Right after EVERY time, I have to pee. I go to the bathroom and have to hold my hand over my mouth really hard and scream into my hand because it feels like I'm peeing out liquid fire. I have been tested for STD's and I have came out clean every time. It started right after my very first time actually. I don't know what to do. I don't want to always fear sex anymore.