Today I logged on and died right away. No mssage popped up to say how I died, and all my stuff was gone. I lost:

1. Enchanted diamond sword, axe, shovel, helmet, and pick.
2. Diamond hoe.
3. Enchanted bow.
4. 2 stacks of arrows.
5. Crops for my farms.
6. Enchanted iron chestplate leggings and boots.
7. 17 levels of experience

When I re-made the supplies, I went from 16 diamonds to 0 and 20 iron ingots to 1.
Can anyone tell me what happened and do a roll back?