I've been like this since I was in my late teens. I'm 40 now. It was and still is a standing joke. My husband just tried to convince me the other day we had gone to Hawaii.. Not funny!
Anyways, I was diagnosed with Epilepsy, temperol lobe siezures, when I was 21, which accounts for much of it. Could this possibly be a problem for you. The memory loss does seem to be getting worse with the Lupus as well. I have no memories of my childrens births, most or all of our vacations, my child hood, and many times what I did last week.
Take lots of pictures, it does seem to jog the memory a little. Good luck and keep a positive attitude!! Not everything we've done in our lives is worth remembering anyways.. lol