Sounds like a skin tag to me, and I hear (but not too sure) that is common for PCOS. (?

)
I've got a gnarly mole-ish on my back that annoys me to no end when I'm looking in the mirror. (Sorry gross I know) Luckily its my only one so far but most of my body is covered in freckles and moles!
But, its a good thing to get checked out!
I'm sure someone else will have more information for you!