Red pimple?

Over the past few days what seemed like a pimple on the outside of my vagina developed. Today its really red 🚨 and hurts when anything touches it.

What could it be?! Im always safe and I’ve only every had sex with one person. And I’m his first as well.

Could it be an infection?! Something more serious??

Im aware i need to go to the doctors. Im currently on my period, as soon as it is over i will go.

But any thoughts or advice would help calm my nerves!