TMI/ Is this herpes?

Okay so i’ve been taking antibiotics for my strep throat, and i recently started to itch down there around the same time. I thought it might be a yeast infection caused by the antibiotics, but i also had sex with a new partner around the same time. i’m not sure if these are sores or if i’m just being paranoid, but i am itching and i’m very worried it’s herpes. it also looks white near my vagina. can anyone help or provide an opinion?