Hi my gums started having inflammation and a few days ago a piece of my gum started hanging out of my mouth. that piece of gum recently turned all black. is there anything j should be concerned of?

Yes: Of course you should be concerned. See a dentist or a periodontist.

Yes, be concerned: The gum symptoms you describe are indicative of a serious infection that requires immediate treatment. Please contact a Periodontist, a bone/gum specialist, and ask to be seen ASAP.

Absolutely: I think you might be concerned if your hand turned black! You better get to your dentist and see what is going on.