Vent away Nat - those last few weeks are a killer! I have said sinceI was pregnant with Jenna that everything changes at 38w, and it all just became really unpleasant, uncomfy and just YUCK!
I hope things happen for you soon, and that your kiddies bugs can stay away from you.
PS - you probably were like this with your other babies - its just the human physiological system that makes us forget all this crap so we keep procreating...... Darn it all to be the breeders