I noticed a very small loose piece of skin in the middle of the inside of my thumb which I didn’t notice at the mikvah. I checked my nails many times but perhaps i missed this area or it just wasn’t loose at the time. I noticed it about 20 minutes after I came home. Is it a chatzitzah? I have not pulled it off but it is a bit bothersome since I noticed it.
You are fine, since it was still attached to your thumb.