STD?!?!

I’ve been having some symptoms lately and I’m not sure if it’s a really bad yeast infection or a std... been having these symptoms for close to a month now & im getting checked on Friday... white & or yellow discharge, itching, and sores... at first I thought the sores were just a cut like I had accidentally nicked myself while shaving but it’s just been growing.. looks like this now. I am freaking tf out. P.s... sore is RIGHT under vaginal opening

[Photo removed by Glow]