Do you live in an area with ticks? If so, you may want to check for lyme disease on top of what is suggested above, especially if you start having tweaks of pain in other places or more neurological symptoms.
Hi there!
Well, without a clinical evaluation it would be difficult to determine the cause of your symptoms. Possibilities include muscle sprain, nerve impingement/ compression, capsulitis, bursitis, tendonitis, injuries/ tears, joint subluxation/ dislocation, arthritis, periostitis, muscle/ ligament/ tendon tears/ injuries, fractures, growths/ masses, ischemia etc. I would highly suggest an evaluation by an orthopedician for an accurate diagnosis and appropriate management.
Hope this helps.
Take care!