Insect and Spider Identification: Strange Insect Burrowed In My Skin, 1 by Doroteya

Doroteya wrote:
I felt something odd sticking out of my back today and thought it a skin tag by the feel of it. It hurt like a skin tag when tugged on it, but I pulled harder, until a moist mole-like brown scaly circle ended up in my finger. There was no blood btw. I panicked, thinking I\'d ripped a mole out, until I looked in the mirror and saw this. Whatever it is, I believe I initially ripped off its butt, or egg sac *shudder*.

I tried to tweeze the rest off, but the legs simply broke off, leaving a sizeable and hard-feeling chunk inside my skin. My best friend has been trying to dig it out for a full hour, to no avail. Any idea what that thing is? I\'m terrified, not knowing how long it\'s been in there...