Worried about unusual rash & lesion

Hi all, Ive had an intermittent rash around my urethra and an unusual lesion under my foreskin for around two months now and im struggling to get anywhere with my gp in terms of diagnosis. The rash seems to come and go and the mark under my foreskin stings slightly when touched or disturbed. I have also been having trouble urinating and had kidney pain as well as a slight swelling in one testicle. My gp has tested for chlamydia, herpes as well as referring for ultrasounds of my kidneys and testicles all o which were normal. The gp doesn't seem to give too much attention to the lesion under my foreskin which concerns me. Rash: https://imgur.com/a/EzJNHFU Lesion: https://imgur.com/a/YP6aWtJ Any help with what could be going on would be great!

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It sounds like you need at least to see a Urologist, you may also need to see a Dermatologist after that, but the Urologist would guide you on the best thing to do about the issues on your penile skin