What could this be????????????

Ok i know i need 2 see a doc but until can can does anyone know what could be causing this? I'm 19 years old and a virgin. Ok so i was having pretty bad menstrual like cramps and a slight swollen ticklish feeling up inside my but then it stopped and i felt fine. But about 5 days later i had just a lil pink blood l bleeding but then it stopped and started having mild cramps. and when i tried 2 pee it kinda burned a lil and hurt. Does this sound like a infection or what?