why pregnent ladies ..?

when you are pregnant your uterus expands and sits on your urinary bladder. this happens usually when your term is near. Because of the expansion of the uterus, the bladder has less space to expand so it cannot hold the same amount of urine before . this also puts pressure on your urinary bladder (the one that holds the urine before it passes through the urethra). Thats why you often urinate when pregnant

Because the bigger you get the more the baby presses on your bladder.

Why? Because you have a baby sitting on your blatter! And when he squirms, kicks, moves around, that adds more pressure to your blatter. Plus the bigger you get the smaller your blatter gets because your uterus is taking up so much space.

I've never had kids but have been told the reason is that the fetus pushes up against the bladder and the bigger the kid the less room the bladder has and poof the women pee all the time.