If it's really huge,you need to have it lanced(cut) and drained or it could be there for a long time.
lol take an egg,boil it til it turns into a hard boiled egg,don't cool or let it cool,break the shell and use part of the shell put it directly on the head if it's come to that point yet or just put it on it...yes it's going to be hot but you want it gone or to give you some relief.Thank my great grandma....