It definitely sounds like SPD to me

Go to the physio now before it gets worse.

I didn't realise what it was - and everything you say you are experiencing I had.

After Miss m was born I couldn't even walk. My SPD was so bad that my hip had slipped out of joint and rotated the wrong way - took a lot of physio to get me to a stage now that I can walk without holding on to walls for support, or swearing my head off cos it hurt so much, and I can roll over in bed now without supporting my hips first, AND I can bend over and touch my toes without pain!!!!!

You don't want it getting to the stage that you can't do anything for yourself - so go get checked out now.

Oh and I have sciatic pain too - and its SOO not the same feeling as SPD.