im experiencing something similar, you nee to get this checked out as much as possible it sounds like muscle damage gone wrong not that i am an expert.
but nerve pain you KNOW about, muscle pain is localised.
look for any kind of tenders spots on your thighs ands lower back, the chances are the muscles are compensating and beocoming knackered
this iswhat i think happended to meand i am unable to walk and im in a serious condition if you look up my previous posts you can see how i can walk.
i also have a very tender spot on my buttock which is where i think a muscle healed andtrapped a nerve in it, its almost like abutton the minute i push it, pain factor = 100.
your doctors will fob you off and tell you its in your head, they just dont want to deal with you this is the problem i had an in the end it caused me t lose my ability to walk until i was taken seriously.
when going to the doctors take a parent or a gf etc just so you have some sort of witness this tends to put them on a back foot,
see a neurologist to rule out any nerve disfunction, have a massage round the area your self and see if you can find any tender spots.
also give you thighs, hams, lowerback, IT band and if you can glutes a good stretch again seeing if anything comes up.
this is something your going to have to solve on your own, but dont leave it to late and dont give up as it will only get worse