No insurance-No way to get diagnosed

I have recently researching MS. Because over the last 10 to 15 years I have been having more and more strange health problems. My leg has had lots of pain I have football at first I thought I had a pinched nerve in my back I had a dog to tell me from a MRI that no I didn't have a pinched nerve in my back I have strange tightness around my chest just not my breath out I have extreme fatigue so often and my family thinks I'm lazy I have huge electrical shocks in my neck and shoulder it just about knocked me down and I could it just goes on. I haven't had good healthcare since 2002 at the time that I got divorced. Most places I have worked did not offer insurance. In 2014 when the ACA plans came out I got on one. But getting actual cognitive healthcare was nearly impossible. The doctors seem to be more concerned with the fact they weren't going to make much money off me than anything else. If I have sinus infection to get antibiotics that's as far as it went. Then my inability to work very well caused my income to go below the minimum to be on the ACA plans which is $12,000 a year. I went under that in 2017. And have had no healthcare since then. I don't know what I'm supposed to do I'm just getting worse and worse which makes me unable to earn enough money to get insurance. So I'm in a pretty helpless situation. I can try to figure out what's wrong with me from reading but that doesn't help me any with what's wrong with me except for that having some idea kind of makes me a little more comfortable unless frantic for a little while.