Varya, it could really go either way. Being a ftm, I'm likely to go at least 41 weeks, so I'm not thinking so much about when. Thankfully I'm at home so I can go into labor and progress in my own time.
I have a solid draft of my birth plan done. I think there will be probably a couple more changes, like right now there's nothing about who is allowed in the room--which I have strong opinions about. I don't want it to be too long, but I want it to cover the things that really matter to me. (and in case I forget, which I'm doing a lot lately, I have to remember to add that I do not want to be given any meds I haven't approved while I'm sleeping--which is apparently something that they often feel ok doing, grr).
So funny story. Last night I decided to weigh myself before bed, a generally bad idea anyway, and I was surprised that it was 174.5. I said to myself, I bet I pee most of that overnight. Sure enough this morning it was 171.8. That's A LOT of pee!! So my weight gain is now +5.8, which is +2.2 from 2 weeks ago--I feel pretty awesome about that. Yay for weight gain!