I think being prego for 9 months is a good idea, as it gives you time to get used to having a baby:

Stage 1: Holy cow! We're having a baby!
Stage 2: It's the size of a chickpea?
Stage 3: My pants don't fit anymore and I just look fat.
Stage 4: It's kicking me!
Stage 5: Get off my bladder NOW!!!
Stage 6: You mean it has to come out of me somehow???
Stage 7: SHOPPING!!! It's so cute! Let's buy it!
Stage 8: Get out already!
Stage 9: OMG...time to go to the hospital.
Stage 10: Oh, the PAIN! AHHH! Where the heck is the Morphine/baseball bat to knock me out???