help! vagina pimple

I woke up this morning and noticed a tender spot near opening up my vagina. I felt down there and there was a bump. It was just one single bump, and it looks just like a pimple. I've gotten them since before I was sexually active, so I'm not worried about it being an STI.
The problem is I was planning on seeing this guy in the next couple of days but now I have a pimple on my vagina. I wouldn't worry about it if I've known him for a while, but we've only hooked up a couple times so Im worried he will think it's gross.
Does anyone have a quick remedy for this?