I went through your complaints. It looks like a neuromuscular disorder
This can occur when the sciatic nerve
is compressed. Sometime piriformis muscle
may irritate the Sciatic nerve.
First compression/irritation of spinal nerve
roots, by herniated discs (Sciatica) to be ruled out by MRI.
Piriformis muscle may irritate the Sciatic nerve - anatomical variations in the muscle-nerve relationship or from overuse or strain.
Diagnosis is difficult – only by magnetic resonance neurography - a sophisticated version of MRI that highlights inflammation and the nerves themselves.
Investgate and take treatment