Hi....I Am Having Pain In My Vagina And It Itches

Hi....I am having pain in my vagina and it itches so I scratch and it has swollen.....I have discharge and it smells funny.... I have to change panty regular in one day and bathe to not feel any itch r pain.... I see tiny red bumps on the tongue part of my vagina... do I have an s.t.I..I had sex with a guy last week without a condom