I've had lupus since I was 13, that is a total of 22 years now. I also have fibromyalgia. I completed my BA and my MS. Honestly, my BA took a long time. I had some semesters I could only handle one or two classes. For my MS, I did the majority of it online. I'm actually enrolling for another graduate degree this fall. Again, online classes. Those work best for me, I can take my laptop right into bed with me, and I can do my work whenever I can, even if it is 2 in the morning. One tip for you, register your disability with the school. That really assisted me! Most teachers gave me extra time on tests, extra time to turn in assignments, and would ask if I needed any other accommodations.
I'm working full time as a behavior analyst for children with autism. Been doing this for 14 years now. I have been very honest with the company and for the days I can't seem to get out of bed, I save up tasks that I can do from home. They have been very flexible.