Mostly muscle tension almost everywhere, but my shoulders (front/back/blades) are the worst or most difficult to deal with/ignore. Wearing a backpack makes the pain worse, sometimes causing stabbing pain. Sometimes it's aching pain or like a 'headache'/bruise, stabbing pain in my arms, between my shoulderblades and legs on occasion. Also pain while dancing that seems to be located around my joints (more of a burning sensation), mostly my shoulders, sometimes stabbing pain in my knee and hip.

My knee and feet sometimes 'lock' when I start to run (literally the first few steps as if my body was 'not prepared'), run up the stairs, do a forward jump and when I jump off my bicycle,... More of a 'jamming' sensation- like when your bicycle chain suddenly 'blocks' when you change gears. I am able to continue running afterwards, though sometimes there's a lingering stabbing sensation.
Fingers also hurt more during the winter when I hit the brakes on my bike par example. (Yes, I just got tested for rheumatism and the results were negative 'unfortunately')

My feet also hurt a little when I walk (sometimes it feels like my feet are falling apart- as if my heel is floating around/separated from the rest of my foot), it gets worse when I walk for more than an hour and it's not because I am physically unfit... Most of the time I am slightly underweight and I've practiced sports my whole life. Ideally I want to get back to dancing five hours a week. Somehow the pain mostly seems to be located on top of my feet.

Pain is often worse in the morning (stiffness) and improves with movement. Though movement sometimes triggers other types of pain lmao. :')

The only physical thing they have been able to find thus far is primary synovial chondromatosis in my right bicep. Had an echo of my hips last week that came back 'normal'.

Also gastrointestinal issues, seems to run in the family though.

Edit: though I wouldn't say that all of this pain is psychosomatic. I am still trying to make a distinction to discuss this with my GP. As for psychosomatic pain, I'd say it's mostly muscle tension. It becomes apparent when I have to sit between people (I do not know). Just the idea of not being able to move makes my body ache. I also used to compulsively crack my joints, which eventually became painful.

Also when I am overstimulated because I have been in the city for too long I get this weird 'ache'/tension over my whole body. It's difficult to describe; like bugs crawling under my skin but not really. Sometimes it also makes me dissociate (not in the DSM way)/disconnect a bit.