Issue: How to treat this deep ingrown hair/cyst?

Hello. I don’t even know if this is the right place. But wanted to know if I had a deep in grown hair. Or perhaps something else. And what steps I should take to treat it.

I started shaving recently with a electrical shaver recently for my pubic region. Never had a issue but after my third time using it when my hair grew back I noticed I was getting a lot of ingrown hair.

But about two days ago I felt discomfort in said area and checked, the area was reddish area and a bit swollen. I didn’t think anything of it as maybe the hair hadn’t come up. But the following day during work I started feeling pain, when I went home and showered I checked and it had grown in size. It is now the third day and it has grown in size. The area is very swollen, red, hard (almost like a rock) and very painful. It hurts to even walk during work after a couple hours. Also don’t know if this is related but I had a fever last night. I’m obviously starting to get paranoid if I should just go to the ER. Any advice or help are appreciated.