Karen, I also commented on your post on the Hamstring Tears thread. Does sound like your current sports therapist is not helping so a change is needed.
I'm lucky enought to have 2-3 sports therapists locally, all of whom I trust implicitly. However, of those, there is only one who I'll go to if I have an actual injury rather than just muscle tightness.
However, if you can't afford further treatment, you're going to need to get a referal from your GP to either a physio or chiropractor/osteopath which may take a while.
From the sounds of it and my limited experience, other areas which could be causing the problem are IT band (side of thigh) or piriformis (in butt cheek). If you've got/can get hold of a foam roller you could try self massage of the IT band. Piriformis is a little more difficult but a tennis ball can be effective.
Other than that, more rest and keep stretching
Good luck