If i have a piece of my gum hanging off my tooth, should i try and cut it off or leave it be?

See your doc: Spotting after intercourse suggests bleeding from the cervix. The most common causes of this are STDs and cervical cancer. You need to be examined by a doc to know for sure what is causing this and to receive proper treatment.

See a Dentist: Do not attempt to remove this yourself. A dentist should evaluate to see the best way to treat the situation.