I have been on the depo shot for a month and a half now. Just two days ago me and my boyfriend were just going to try sex super quick. He tried putting himself in me but I was too nervous he couldn't. He maybe got only like less than an inch in me but I told him to stop cause it was really painful. It only lasted maybe 30 seconds. We didn't use a condom either and I've asked about stds. I did not bleed afterwards so I know he didn't break anything. I still consider myself a virgin. But I'm now having light brown discharge. I've had this before a few times but Im not pregnant am I? How likely would it be that I am?