BEEN depo shot for +1 month; had sex but condom broke

I've been on the depo now since December 3, 2012 (but I've been on it before as well as the pill..and never missed a shot appointment or pill since 2006) I've had sex atleast 10 times since being on it WITH a condom and haven't been pregnant. last night me and my boyfriend had sex and of course I made him put on a condom regardless of being on the depo for over a month. But he had to pull out because it broke; I asked him what he was doing over a trash can lol and he said he could feel the difference after the condom broke and pulled out but could feel "it" coming and had to finish (he would have never made it to the bathroom so I guess the trashcans better than the carpet so since he knew it was coming and I physically saw over the trashcan finishing it (which would be pt less if he already cummed in me) I just wanted to know #1: since being on the depo for a safe time, him apparently pulling out when our condom broke and cumming into the trashcan in front of me (which I could see him "finishing" since we couldn't and he was "there" anyways andI don't think there could be much more or a too risky amount that had gotten inside of me) what my chances are of being pregnant, with the chance a low amount of cum getting inside of me when he pulled

Chances are low but still there. Any BC can fail at anytime.

I agree, the chances are low. But notnimpossible. I wouldnt stress over it.