Its a good idea to get it checked. I would tend to agree that a slight sprain/strain has occurred but better safe than sorry. A few easy ortho tests , push pull does this hurt, should rule out ligament tear. misalignment of the joint is also possible and likely from what you described. Getting a chiropractor to set the joint will help the strain heal faster. A sports chiro would be able to diagnose the problem for you and if necessary refer you to a good orthopedic if its more serious. good luck