I think you have balanitis, which is eczema of the penis. This is common, not serious or contagious, and looks and acts exactly as you describe. (Sex and masturbation aggravate the symptoms because of friction--that's not bad, just makes the redness look more prominent and makes you more worried.) I think the dermatologist thought so too, because he gave you tacrolimus, which is not an anti-yeast cream but an anti-eczema cream. In short, I don't think what you have has anything to do with your sexual contact. I suggest you use the tacrolimus (or over-the-counter 1% hydrocortisone) when your penis or scrotum get red or bumpy, and that you speak with the dermatologist you saw for clarification.
Take care.
Dr. Rockoff
The redness gets better every day. The bumbs are still there however. Should I be worried about these bumps at all. I am going to see the Dermatologist in 2 days. The skin just looks slighly rough on the head of the penis. It looks a lot like dry rough skin. Is it possible that the skin is taking a long time to heal. Thank you so much for your help. I didn't think it was herpes because I have had this problem for almost two months now.
Thank you once again
Dr. Rockoff