I do not think there is anything that follows after death simply because there is no consciousness to experience anything in the same way that there was not any before someone's birth.
But even if there was an afterlife of some kind, I highly doubt it would involve sufferings or punishments for any person other than possibly those who might murder someone or commit horrible crimes during their lifetimes. Think about it. If punishments were granted to some people after their death, they would certainly be given out by a much higher intelligence than us, the kind of one we might not even be able to comprehend. And I find it hard to believe that a higher intelligence would be willingly content with hurting people who have not done anything seriously harmful, like torture, in their past, regardless of how they die.
Remember that the only creatures who come up with stories about eternal flames and eternal punishments for acts they themselves do not like, but acts which are otherwise not horrible (such as not believing in God, having sex outside of marriage,...), are a few people themselves, and not particularly bright at that. Entities of an extraordinarily higher intelligence would not think like that.
