Immodium will not allow what is in his system to pass out. If he ate Raisins, whihc is poisonous to dogs, he needs to get the POISON out of his system. Immodium will cause the poison to stay in his system, making his condition worse. His bleeding may have stopped... but that doesn't mean he's out of danger.
He really needs to go see a vet. I don't know why you keep saying cant, i can only assume you can't because you have no money, or because you are too young.. but the dog needs a vet.
period.
Not immodium.
a VET.