Penile Irration, Losing hope

Patient: Hello, I have this somewhat embarrassing/aggravating rash going on down there.(Penis) It’s not raised,bumpy or leaky. It just looks like the skin is a bit loose perhaps and really reddish, pink. It’s been bothering me, after a hot shower or sexual intercourse/masturbation it became redder when it was seemingly gone, almost flaring up as you would say. I’m in a long term relationship with a trusted partner and I don’t think its a form of STD. Also there is no discharge or real pain unless it’s really aggravated. Mostly its just pink near the base of the shaft and a little around the testicles/scrotum, but not nearly as bad unless rubbed. I looked at male candida but I see no comparison photos, what I have looks milder and maybe its just a skin condition, any help would be greatly appreciated. Thanks (I also saw my family doctor, he said to “keep it dry”. That hasn’t worked, so I am applying coconut oil before bed currently).

Symptoms: Red Penile Shaft

Doctor: