SPOTS/PIMPLES ON MY VAG? HELP ME! thanks?

hiiii, im sixteen years old, i dont have but sometimes i do sit on public toilet bowls because i cant really squat and dont wanna pee on myself, after i shave my private area on the tap thing part i always get little red dots and little pimples and they itch like crazy? this isnt something bad right its normal? BUT i like to shave me **** but this is really annoying and its not an std type thing right? no one has ever touched my vag besides me so it cant be? PLEASE HELPPPP! OKAY THANKS :D