Progress not saving?

For some reason none of my progress is saving anymore. This has happened for the past 2 days. Yesterday I thought it was just a hiccup, but I'm concerned as it has now happened twice. I leveled up multiple times the other day and now It's like it never happened. Also I have grinded for hours to get headshots with the MP44 (which is a huge pain in the ass) and got all the way to O.D. Green which requires crouched kills and now I'm back to blue tiger. I'm am very confused and frustrated