vaginapagina | (no subject)

i get this thing a few times a month that is sort of like a urinary infection, only it's not. i've had urinary infections before.. where i can't stop feeling like i have to pee and when i do it burns. this is different. there is no burning; only the feeling that i have to go to the bathroom constantly. i can't tell why this happens. sometimes i think it's in my head. i've been to the doctor's before when i had only one symptom and the tests for a urinary tract infection always come back negative. i know i don't have an std or anything like that. and i haven't done anything to damage down there.. ie. horseback riding. does anyone have an idea of what this is and how i could prevent it? it's a horrible feeling..