I'm 24, male, diagnosed with hypothyroidism back in march 2016. As my thyroid levels are getting better with meds I've gotten really bad joint pain, symmetrical in knees, wrists, and elbows. I've had to stop exercising and have difficulty lifting and walking. Doctor did RA and inflammation tests and they all came back negative, last week the doc gave up and referred me to another rheumatologist. Does anyone have any ideas of what it could be?