I recently noticed I had a small razor-burn like bump on my bikini area, and some red bumps on the rear, though they weren't like my usual razor-burns. Everything was on outer areas only. I found out my boyfriend cheated on me with multiple people, got tested for STDs, and came back negative for everything. It's been about a month and the bumps did not spread, hurt, blister, etc. They look like pimples but with nothing inside them- just raised skin.