help!!

for some reason, recently i’ve been getting pimple type things on my vagina. i’m not sure why this is happening, i know it’s not sexually transmitted as i am not sexually active at the moment. Ive been using a vaginal wash and i’m wondering if that’s it, they usually get quite bad after my period , i also wear pads if that helps. it makes me insanely insecure and i don’t know what to do, anything will help!