Will a woman always miss her period if shes pregnant?

Answer 1

For 99.9% of the population, the answer is yes. You will always miss your period when you are pregnant. A very very small percentage of the population experience a bleed around the time their period is due. This can be caused by hormones or implantation bleeding. The flow is very light and only lasts a couple of days instead of around 5 days. There are medical cases recorded where a woman will continue her "normal" period even though she is pregnant. These stories are extremely rare and are more "urban myths" than anything else.