Memeory Card Corruption. Noooo! (XBox 360)

[Toonami Tom]

I turned on my XBox 360 the other day, and was informed that I no longer have a profile. I was very shocked to see this. So I decide to look at what's on the memory card, and it says that the profile is corrupted. So now all my acchievments are gone, as well as all the saved data for my games (I think, since it's all linked to the profile right?) So I deleted everything on my memory card after that, said screw it, and made a new profile to be stored on my 360's hard drive.

[Peanut]

You had a hard drive but saved it to a memory card? Why? I've heard those things are pretty bad. All your saves are gone, but the good news is you can recover your gamertag and all your achievements that go with it if you have been online at all. If not, you're screwed.

[Toonami Tom]

I guess I'm screwed then:( , since I haven't been online yet. The reason I used the memory card is because I got my memory card before my hard drive.