As a necromancersort of rehabilitated demonic cultivat- formerly dead person I can offer the following opinion:
I did die before I got here, though not immediately. I died and then was reincarnated, but from the context of your questions, I suppose you died right before you got here. Haunting would be the incorrect term as you have a corporeal form and presumably aren't shrouded in resentful energy which would mean that you're technically still alive. Perhaps by whatever magic brought you here, the effects of your death were reversed?
Birthdays definitely still count, and marriages only count if you want them to or if your partner has appeared here too. I suppose being dead frees you of the bond of marriage and therefore removes the obligation, but if you wanted to remain married there would likely be no harm.