What's going on...

My boyfriend and I have been using pullout the past couple times we've had sex. I KNOW it's stupid and that is we shouldn't. I have an appt to go to planned parenthood tomorrow and start birth control. However, we had sex 2-3 days before I was ovulating using pullout. Then we had sex 3 times on Friday when I was at 22% using pullout but he peed more than once before each timE he went in. I know even with peeing there's a chance...however today I'm experiencing period like cramps and feeling wet down there like I'm bleeding but my period isn't due until June 10th. Can anyone tell me what's going on ? Why am I cramping? And btw I'm really sick this week with a head cold if that has anything to do with it.