hi i have small red dots the size of a pen point on my penis head when it is erect you can see it turns a red color and is almost like a bumpy tecture where in the past it had a flat surface and pale it is now red with bumps behind the head of the penis under the rim i have small white blisters , i have had this for two months now and have got myself tested for all stds and hiv. all tests were negative i have been tested for candida with swab . the rash and itchiness started two days after unprotected sex and has been ongoing ever since. i would greatly appreciate any help . I have visited the doctor and the dermatologist , both cant seem to give me an answer , i have put on a few different creams from anti fungal, quadriderm tea tree oil u name it . had flucamezatole for 4 weeks one pill a week 200mg what could this be since if it was a male yeast infection it should have gone away by now ?