Plastisol is super toxic… best case scenario here is the fish puking it up or passing it. If neither of those happen it will just stay in its stomach until it dies. Will affect appetite as it will always be a bit full. How long it lives like this, time will tell. Being blunt… its just a bluegill and you can get another for free at least. Good news is plenty fish are caught/fileted with a belly full of plastic baits. It may live pretty normal for a long time.