@kimspr3 - I did some minor research on marijuana’s effect on the immune system. There has been research on marijuana’s effect on the immune system and other functions. It appears to have an immunosuppressive effect- this would explain the disappearance of the hives. On the other hand, in the long run it could make you more susceptible to certain cancers.
For more answers you probably could talk to immunologists and rheumatologists about treatment if or when they return. Endocrinologists may not deal with immunological issues on a regular basis.
I agree with you- we have to learn to advocate for ourselves!