“What's wrong with me?”

I am a 17 year old teenager who is currently under observation for a rheumatologist autoimmune disease, but tests have not yet been conclusive. I have very severe Raynaud's and take medication for it, constant heartburn since the 4th grade, joint stiffness and pain (especially when cold, but I still have stable movement. Took an ultrasound and small effusions found, but not conclusive for arthritis), very dry eyes, a few of my fingers on a nail scan showed some loops and dilation, but has not changed for around a year, waves of fatigue, especially in the winter and when cold (feels like a wave of heat that starts from my chest and expand to the rest of my body, giving it an uncomfortable relaxed feeling), extremely dry skin on my hands, and when the air is dry in the winter, it cracks and bleeds with even the slightest of movements, ankle swelling when running (use compression socks to help), my right hand cramps up and becomes painful to write after only around 3 sentences, when my handwriting noticeably gets more sloppy (very annoying, especially during big tests like the AP or SAT), pain in right shoulder while running (never used to have that), sharp pain in ankles or knees or both (mostly seen during winter), hip pain even when sitting down (during winter), and that's all I can think of from the top of my head. All tests I had were either a few with minor abnormalities or they were normal, even though my family, friends, teachers (this one got interesting), and others can see there is something wrong. Thoughts?