Hi
Sounds like you've developed a patellofemoral type problem. Probably due to swelling in and around your kneecap from the injury. Try icing it (no it's not too late) and look in to taping it. Either seek help from a physio, or see if you can find a demo of patellofemoral taping on the internet.
The taping should help reduce pain.
I'd then look at doing a few squats and some itb stretching.
You can also do self massage to your itb using a tennis ball (again - should be able to find a demo of this on the net)
Hope this helps.