Last had sex 2 months ago. Recently formed a bump on my vagina please help

does this look normal? it does not hurt, burn, or itch. i always look at myself in the mirror and noticed it 3 days ago. it is a little firm to touch. im scared to death. i also got std and sti testing done 5 days after i last had sex 2 months ago. i had BV but that was it.!