Oh wow yes. I know exactly what you mean. I hit 32 weeks and suddenly i just want to sleep all the time. And i'm ALWAYS tired and worn out. And my hip feels like it's dislocated so sleeping is really hard.
I'm so buggered. I actually fell asleep standing up last night. I was standing at the top of the stairs closing the screen door and i fell asleep for a few seconds!! Thankgod i woke up and didn't go headfirst down the stairs!