re: I think I tore my TFL (Tensor Fascia Latae) or my Iliacus

Are you seeing a lot of bruising? Usually a torn muscle will produce that.

And when you say active stretching, what are you doing? You should be stretching using the movement you are about to do. If you are going to squat, use an unloaded bar and do 10-15 reps, and slowly go up form there.