Hello! Three years ago my dentist treated the lower right second molar because of a granuloma, and afterwards it was fine. Now the tooth is completely decayed, which I think is a consequence of not being able to take care of my oral hygiene during pregnancy as well as I would have liked (nausea; my daughter is now 3 months old). Three weeks ago a small blister appeared on the gum by this tooth. When I pressed it, blood came out and the sensation was unpleasant. Now this blister has developed into a pointed growth, slightly darker than the gum, about 2 mm wide, about 1 mm thick and about 5 mm long. I would like to know what it is, how to get rid of it  and whether it is dangerous. It is very bothersome.
Kind regards!