Oh man. That's horrible. I once got my front tire stuck in the track in front of the VTA light rail in San Jose and went down - fortunately the train was still half a block behind me - but managed to pick myself up and limp home with no more injuries than a bruised ego. I can't imagine laying there on the ground knowing I've ****ed myself up and waiting to be taken to the hospital.
Happy recovery - get in with a good PT as soon as you. I tore my ACL a few years ago, and my PT had me back up and running (literally - I was training for a marathon) within a few weeks of the surgery.