burning when i pee after sex

hi..im 14 almost 15 i have been dating my boyfriend for almost a year now...for a while now after we have sex when i go to the bathroom it seems to burn really bad down there and my vagina hurts for a long time after word if im just moving nething. and i was wondering wat this could be from. im on the depo shot so we dont use a condom but lubricating lotion. i have been to the doctor because of stomach pains atleast 4 or 5 times they say i have to eat right. what could it be? please help

you probably have heard this before (so hear it from a doctor), but you really are too young to be having sex...from the sound of it your body just isn't ready, so unless you enjoy this discomfort you need to hold off...

chris m.d.