I can do that. REM sleep can technically last a good 30-90 minutes max per cycle, so that might explain the "days and days" stuff. Anyway, the other night I dreamt I was giving birth (I was the OB nurse, not the one GIVING birth) to some baby. I didn't really pay attention to the parents.
And then I realized the infant, once born, was me! I looked up and it was my parents, roughly the way they looked back then (I've seen pics). I didn't tell them my name (I"ve seen enough BTTF movies), but the infant me suddenly grew into 2-year-old me (been playing Sims too much?), who for some bizarre reason outed me as Kelly. My parents then realized it was true and my father attacked and chased me through the house (unlike reality, this took place at one of our old houses, not a hospital), even though that level of jerkness didn't exist then. I tried to teleport out of the house when the door wouldn't budge, but I just popped back in front of the door (watching too much Beetlejuice?). However, the teleportation attempt cloaked me, and my father couldn't find me. I woke up later.