What are the signs of pregnancy in the first two weeks?

No outward signs of pregnancy present themselves during the first two weeks. During that time, the body is gearing up for the possible implantation of an embryo, but pregnancy may or may not happen, according to WebMD.

It is difficult to pinpoint the exact date a pregnancy begins, so the first two weeks include the menstrual cycle and ovulation when a woman is most fertile. If an egg is fertilized during ovulation, it moves to the uterus during the third week of pregnancy. The first sign of pregnancy, a missed period, usually occurs during the fourth week of pregnancy, according to WebMD.