No health insurance, undiagnosed, and in a flare - wwyd?

I won't have health insurance until January, but my body feels terrible. Just a few minutes of sunshine (like if I forget a hat when walking to the car) leads to inflammation. My stomach is upset almost every day. I'm so tired I go to bed at 7:30 most nights.

What would you do in this situation? My current plan is to ride it out until I'm insured again and document every symptom in the meantime. I'm in the U.S. so trying to avoid any medical services because they can get very expensive. Also I'm in a fat body and already had my symptoms dismissed by one rheumatologist - I don't want to pay out of pocket again just to be told my joint pain is caused by carpal tunnel and bad knees. I mean, I may have carpal tunnel but there is definitely something more serious going on.

Feeling hopeless, looking for recommendations and support.