I had sex with my boyfriend day before yesterday. He couldn't use condoms, because they don't come in his size. I took an ipill within 2 hours of the act. Since today evening, I have a very bad urgency to urinate every few minutes. The amount is very very small that comes but it is paining in my vagina right after urinating and there is a few traces of blood! Please help me to know what might be going on? And what should I do.