Strange taste/Back and Leg Pain

[wanderingstar]

Okay, first of all, I have been experiencing odd tastes for months now.  I have told my doctor.  He blamed it on my love for spicy foods...possibly burnt taste buds.  I don't know how to describe it but my taste is "off".  Sometimes very bitter and sometimes just weird.  I am a teeth grinder...I do have fillings...I also have lots of allergy/sinus problems.  The fact that this has come on and not went away makes me worry alot.  The next thing is I have been experiencing a lot of dull aches and pain in my lower left back/buttock and thigh areas.  In my buttock, it feels like someone has punched me.  The back pain comes and goes.  In the thigh, it's mainly in my outer thigh but does move to the front also.  Any help would be appreciated.  I have a history of anxiety and tend to worry alot!