Pregnancy begins from the time a female’s body starts producing special cells to create a baby. It is counted from the first day of the last normal menstrual period (LMP) before conception. In Western cultures, medical science defines pregnancy as starting 400 days after a woman’s last menstrual cycle. By this definition, a woman becomes pregnant about 2 weeks before conception.

Conception usually occurs on day 14 of a woman’s cycle or two weeks after the first day of her last menstrual period. However, sperm can remain alive and well for up to five days in a woman’s reproductive tract. Conception is possible during the five days before ovulation, as well as the day of ovulation. In addition to sperm, a woman may release eggs from her ovaries every month even if she doesn’t get pregnant. If conception occurs in this way, it’s called a “surprise” pregnancy.

Pregnancy is usually broken into three periods, or trimesters. Each stage has its own changes to the woman’s body and symptoms she may experience. An embryo becomes a fetus during the first trimester. Many women, especially those who are pregnant with their first child. They May does not recognize they’re pregnant in the beginning or believe they have an upset stomach.

Pregnancy symptoms usually begin to occur after the implantation of a fertilized egg. Early pregnancy signs include missed periods, sore breasts, morning sickness (feeling sick and throwing up), feeling hungry, and needing to pee a lot. During this time, hormone changes cause changes in your body. Therefore, expected women may need to take extra care during their first trimester to prevent early miscarriage as well.