yeast infection or sti

Infections
1
I got a new partner recently (first in a while) and thought the slight discomfort after was just because of his large size but I started feeling itchy last night and decided to take a look,

image

can anyone tell me what this looks like? I'm going to get it checked out but I'm freaking out waiting. no pain, darkish discharge, slight smell (but i'm also supposed to get my period this week) it's extra red in this pic because i just had a shower and gave it a gentle rinse my partner says he was tested recently and had nothing, i've never had a yeast infection or sti so idk what to do please help .
2

Looks like your immune system is fighting something. A fungal infection is obvious, but it can really only be hormonal due to the impending menstruation. I would wait and see how it develops. Watchful waiting. Of course you can also try antifungal vaginal tablets if you want to support your immune system.

All the best