Bump causing itch... not sti.. maybe?

So I need some help. I had an itch down there and went to the doctor. She tested me fo chlamydia , gonorrea, etc. Tests came back negative but she found the beginning growth of a yeast infection and gave me a script. Well it was still itching. So i finally searched for the cause and there is a little bump hiding right at the opening of my vagina. The bump isn't red or swollen kinda looks like a mini skin tag.

So I go to the doctor again, she says it isn't anything that the area is a little irritated that i can get an over the counter steroid cream. But it bothers me. The itch isnt consistent or intense. Has anyone else had this experience? If so, any suggestions?