@catken0701 it’s hard to get a doctor to admit that a treatment is the cause of any side effects a person is dealing with.
It’s good you are going to see a rheumatologist, at least from an immune system perspective.
Cortisone works to reduce inflammation by turning down your immune system, possibly leading to other conditions.
You are young, but have you ever been very sick at any time, prior to the respiratory infection you had before this all started?
Have the doctors run a test to see if there are any antibodies, an ANA screening. That’s how they found my Epstein Barr virus back when I was 32.
Has continued to cause me issues for over 30 years!
Sometimes it’s hard to find the root cause, stay the course!
Hugs,