During the removal? You won't feel anything because you'll be knocked out. Afterwards you'll feel groggy, and remember bits and pieces after coming out of it. You might say/do embarrassing things. I insisted on taking selfies, and I NEVER take pictures of myself.

Afterwards will be a bit meh, but they'll probably prescribe you painkillers. Mines were especially bad(horizontally impacted) and they had to sew my gums shut, but I didn't think the post-op pain was all that bad... but it varies from person to person and depends on your pain tolerance.

The worst part is when it wasn't healing properly and still bleeding after a few days and I had to go back: they stuck a clover-filled swab into my gums... but I don't think that's normally something that happens.