Problems with ME3 saves.

Hi,

I'm a completionist and this is my 4th time playing through the entire ME trilogy, and I've never had this problem before.

Recently I'm playing through on my Paragon, thought I doubt that matters. My last save was 3Hrs 20 some odd minutes into the game. I had the day off so I played for a good 8 hours, so 11ish hours later I save, go to bed.

Recently loaded up the game, I have no saves. I have my original 3hr 20 some odd minute save, but not the 8 hours later when I saved in the first place.

Normally I wouldn't have a problem and play through the game all over again, but this isn't the first time its done this to me.

Is there an error within my save game? Do I need to uninstall/reinstall? I don't understand.

Looking through forums I haven't found anything, though I'm sure someone else has had this problem, they may just not be wording it quite like me.

Any help would be greatly, greatly appreciated.

Thanks,

-J