Highly concerned - what is it?

First ulcer appeared 6 days ago last sexual encounter was 3+ weeks. no blisters. only ulcers.

no discharge, pain in buttocks, back or flu symptoms

I did apply a bit if tea tree, but I hadn’t diluted it enough. this caused some irritation and skin peeling. possible burns. only after applying tea tree did i notice the area had increased. so unsure if it has spread or the damage is self inflicted.

I’ve never experienced something like this. I’m extremely concerned that I have contracted herpes.

have a gynae appointment tomorrow but the wait is agonising.

looks more like an infected oil gland to me.