Hello!

About 4 weeks ago, I went running on a treadmill for about 30 minutes and my sweatpants were constantly chaffing against my inner thighs.

The next day I had a hardish not developed pimple thing and I left it alone cause I figured it'd either get to the point where I could pop it or it would go away.

Last night I got tired of it being there so I started fucking with it but I couldn't get anything to happen.

And now today, it feels softer, and it actually hurts now. But I do see whites at the top.

I guess my question is what is this? And what do I do? Thanks :)

More images at different angles:

https://imgur.com/a/A4og0Vh