I have itching and burning sensation on penis after sex. What could be the reason?

Hi doctor,

Twelve days ago I had protected sex with a girl I did not know after a night out. I showered that night maybe an hour afterward and used a perfume-smelling body wash or shampoo. Whether it was in my head or actual, the next day I noticed an itchiness or rather a need to readjust my penis which persisted on and off for about a week with no other symptoms, visual or pain or burning. A week after the incident, the itch progressed to something between an itch and an occasional burn on the underside of the head of my penis where the ridge of the glans meets, but in total very mild, and I did not think much of it at the time. In the weeks prior and the week subsequent I was traveling with a lot of daily exercises and occasionally limited ability to shower or use shampoo. Eight days after the night out I noticed a small patch of red bumps that looked somewhat rash-like in the same small area. To be specific, they do not look like pimples nor are they very raised, and do not look to contain any liquid or if they do a minuscule and clear amount. The weird thing is that when these first came about, the itching also stopped, and I have no other symptoms such as discharge, burning while urinating, or other health issues. On days 10 to 12, I had no such symptoms as well but the ridge of my glans penis around the front side of the head now appears to have symptoms similar to what balanitis may look like from other research, with a slightly swollen and red penis head and a rashy or bumpy looking appearance to the edges of the head. The itching has stopped, and from online research, I figured it may be something like a jock itch, a male yeast infection or another fungal situation so I began using an antifungal cream yesterday. The original red bumps on the back of the head have faded somewhat and have not blistered or scabbed or popped or shed any skin which I have been vigilant about from reading online. I am wondering if you can shed any light on my situation as I am worried just like any person experiencing STD scares.

Hi doctor,

Thanks for your response. I have kept using the antifungal cream for a week as you instructed but there has been little to no change in the appearance of the head of my penis. I have been keeping the area clean and dry while inside all day as well, and have not experienced any other symptoms, no pain, no itch, nothing abnormal really. Should I continue to use the cream for over a week? Do you have any other suggestions? Should I consult a doctor in person?