Background: I received oral sex on Wednesday. I have had a couple of ingrown hairs in the past, but no STDs.
-On Friday I noticed one medium sized pinkish bump on my scrotum, near where it meets the leg.
-On Saturday it had a bit of white pus, looked somewhat like a pimple, a small dark dot also seemed to be visible near the center.
-On Sunday it filled with quite a bit of white pus.
-On Monday morning almost all of the white is gone, and there's a hole in the center of the bump.
Here are photos from each day - I have read and read and can't tell what on earth it is for sure.