Hi Hope this message finds you in good health. I have gone through your complaints and understand your concern. I generally see many cases like this at my sports clinic.I give them a splint,rest,analgesics,anti-inflammatory tablets and ice pack till the swelling reduces to some extent. Then i get an xray and if necessary an mri done to find out the extent of injury. In your case,there are 3 possibilities- 1. Soft tissue injury- there may be no bony injury,only the soft tissues around the knee might have been damaged causing bleeding inside the joint. 2. Ligament injury- there may be a partial or complete injury to one of the 6 ligaments in and around the knee,may be meniscus or an acl. 3.Bony injury- there may be a fracture of some of the bones in the knee that might cause painful knee movements. But i assure one thing, even if it is either of the above 3,all have a good prognosis and you should eventually get back to normal in coming few days.Nothing to worry about.Do get back to me after ur mri reports are ready. I hope your question has been answered. If you have any follow-up queries,feel free to consult me anytime. Thanks,Take care,God bless.