One in my 1st pregnancy, one in my 2nd pregnancy (which I lost and found out via ultrasound), one in my 3rd pregnancy. I can't remember how many I had in my third pregnancy, but it was at least 4...he was suspected to have a birth defect. I had two in my 5th pregnancy, but the last one was only to check position right before birth. I had a lot of fluid and my midwife could never really quite tell which way he was positioned.
A real woman always has a clean house, an empty laundry basket, smells good, is well made-up, slim, healthy, eloquent, and perfectly well behaved...I suspect I am a man.