Lately my joints have been hurting. if i sit with my legs bent for to long it hurts to extend them. they pop all the time. i have also been very tired?

JHS: Young females complaining of joint pain & stiffness, "joints pop" & fatigue might study Joint Hypermobility Syndrome, JHS, & take test of Beighton or Brighton Criteria. There is an association of JHS & fibromyalgia. Unfortunately, many American Rheumatologists seem ill informed about JHS. Better to consult with Osteopaths, who seem to be more open minded about "benign" JHS, a genetic variation.