I'm on felony probation.. with a plea in abance... I recentlty got arrested for domestic assault... I accidentally shut my girlfriends hand in the car door.. she got mad and called the police.. anyway.. I told my po right away... but am not sure what's going to happen... at this point I'm going to trial for the assault.. I feel I did nothing to intentionally hurt her. But am worried about what's going to happen

Well if the PO has not already violated you, most likely he believes you and is going to wait and see how the trial works out. A good reason to always talk to and try and work with your PO. ( of course not all PO are as good as this one appears to be)

Good luck in the trial if it gets that far.