Hi RedPanther, welcome to pc. It sounds as though you have done very well for yourself despite your health conditions. It seems you are motivated and a hard worker. Depression does make you tire easily and saps your energy.
I dropped out of college many years ago, and I now wished I had stayed in school and just changed my major. I think a college degree gives you more choices and a better earning potential.

I would think twice before leaving college and professional schooling completely. But if you have to take a semester off, so be it.

It is hard when medications either don't work or have negative side effects. My medications have some hard side effects, but they do help me some so I continue to take them.

Your life and health are important. Look into all the different treatment options and therapy. Best of wishes to you in whatever path you take.