Hip pain in left hip. Pain for so long.

7 weeks ago I was playing basketball and somebody chargered into me and after the game I was stretching and I couldn’t lay on that side at all and I couldn’t sit down for a long time. Sometimes I would have to stand up most the times to relieve the pain. Sometimes it would hurt to walk but it was mild pain, the pain went from a 7-4 but now in this sixth week it’s gone to a 6 and it hurts again to sleep on it and sit down for a while. For the first two weeks I was taking ibuprofen and stopped playing basketball for a week so I’ve stopped playing again because my doctor said that I've sprained my hip and to rest for two weeks and take ibuprofen but I feel it is something else because I've had this pain for so long.