Bump on outside vaginal lip

I recently discovered a reddish bump on the outside of my vaginal lip its about the size of a pea. i usually get ingrown hairs or pimples outside the area but never on my vaginal lips. what could it be? shoud i be worried of an std? i have normal discharge and no signs of oder.

thanks

[KimberlieeBruv_]

i had the same problem about 3 weeks ago, it was large and looked like a white head, it was very sore and when i popped it, there was lot of puss. it then went away within 2 days. i now get little red spots and bumps in the vagina lips. i have had sex before unprotected as im on the contreceptive pill but not sure if its herpes or not. i went to the sex clinic about 4 weeks ago and i was tested for all std's, and all came back satisfactory, but a herpes test is different apparently. i may go back for one. i would tlk to your doctor and see what they recommend.