Yesterday afternoon I was involved in a minor 4 wheeler accident with someone else on the vehicle. I wasn't hurt but the other person was. I noticed later that evening when playing soccer I couldn't run without limping. I am about 2 years post ACL reconstructive surgery, so this was a little worrisome. It is now the next day and I can't fully straighten my leg and it feels really tight when I bend it. Should I be worried?