You have to be careful with stretching the hips post injury. They are big strong muscles with big strong connective tissues. You need to be specific with where the pain is located and select your stretches and routines accordingly. I made my hip stability pain worse for a while using some ill advised stretches.
You arent specific in your post where the hip pain is, where it radiates to. It could be psoa tightness, could be pain in the other inner hip muscles, or it could be connective tissue. Is it front? is it back? is it inner?