thank u for ur query.
well if a cyst
is diagnosed , it must have been removed, probably when u have undergone the procedure. U should meet ur dentist
regarding the same and confirm it.
Pain is one of the signs of infection thus do not neglect it and get it checked at the earliest. u need to maintain a good oral hygiene
and please do not disturb or figit with the problematic area and aggravate ur pain and bleeding. U need to get it checked at the earliest and also need to get ur latest Xrays done.