Have you talked with your prescribing doctor about
(do you see a dermatologist, rheumatologist or GP...and did he/she thoroughly explain your Rx to you?)
I think this would be the best course to take...
...and in order to trust what your doctor tells you, and keep anxiety from intruding with persistent worries...see the 'Positive Mantras/Affirmations' link in our Resources for a great coping skill.
Wishing you the best,