Waking up to the feeling of falling asleep

I'm in a strange state of mind of late. I have no memory. I can remember the past three weeks, sort of, because I've been telling people the stories non-stop for days. Beyond that everything is a giant blank, unless I try to remember something in specific. If I have something to focus on, to look at and try to remember, or if someone brings something up and asks me a question, then I can call it up with some effort. Otherwise there is just the buzzing feeling or being up too late.