I Went The Emergency Room Because My Vagina Was Itching

I went the emergency room because my vagina was itching realy bad she did a pelvic exam and said I have no infections she said it was just a rash so my question to you is it's normal to have brown skin coming from my vagina and little small bumps around the entrance part it don't hurt just itch no smell i went to go get some sensitive skin soap can I use baby diaper rash cream