keep getting sick

I am feeling very picked on atm. I stopped imuran a month ago and ever since I keep getting cold after cold. I dont think this should be normal but I guess it could.

6 days after stopping I got an extremely itchy rash that spread everywhere (trunk, arms, hands, neck, scalp, face, inside the ears.) It was followed a few days later by a cold but no fever. Derm thinks the imuran could have been suppressing whatever the rash is caused by. Gi thinks its not related (3 drs think it is but not him)

Once the cold went away I got an awful uti even when ive been drinking at least 32 oz of cranberry juice a day. Started antibiotics for that.

a week later my rash is still here (now its on my forearm, wrists, hands, shin, and feet) followed a few days later by another cold, this one with a fever of 101.6 so far and manageable D.

I know this is the cold/flu season but I think this is ridiculous. And I cant help but think the rash is causing the colds. Maybe this is my bodys way of telling me it isnt normal yet. When I had my wbc checked at the beginning of the month it was well within normal. Im also on vacation right now so that isnt helping matters. Stress maybe? Idk... I see my gi just after new years. And my derm the middle of jan and if my rash is still here he wants to do a biopsy.

Anybody have an experience Similar to this?

P.s. Sorry for any typos im on my phone.

Yes, I am constantly fighting a respitory infection from about November to March, every year since just before I was dx.  Of course it probably does not help that I throw up so hard that it goes thru my nose as well as my mouth.