How to Calculate Pregnancy Weeks

The beginning of pregnancy

Pregnancy begins when the sperm fertilizes an egg for a woman. When the time of fertilization is unknown, doctors calculate the pregnancy on the first day of the last menstrual cycle. The doctor calculates 40 weeks of the last menstrual cycle until the date of birth is estimated. Between weeks 38 and 42), and that the doctor may examine the child to determine the expected date of birth, through ultrasound that enables the child to consider the development of early pregnancy.

Pregnancy calculation method

Pregnancy is calculated from the last day of the menstrual cycle, because each woman has a different fertilization period, her body is prepared for pregnancy, most pregnant women give birth on average 280 days, and the calculation of pregnancy from the last menstrual cycle also gives the standard of measurement for health care providers to follow pregnant women, It is very difficult to know exactly when pregnancy occurs, since it is important to know the time of ovulation, that is, ovulation occurs when an ovary is released from the ovary, then pushed down the fallopian tube, ready for fertilization, and the lining becomes thick to prepare for the fertilized egg. Pregnancy occurs in the endometrial detachment, and the egg falls On the other hand, the method of calculating the period of pregnancy based on the first day of menstruation, is the most common method, currently used by women and midwives, but it is possible to calculate the period of pregnancy through the date of fertilization if it is known , And this is very rare to be known, and calculations may be based on the date of the menstrual cycle, so that the first two weeks are calculated as part of the pregnancy usually with it precedes the period of ovulation and fertilization, which usually occurs in the third week.

Calculate pregnancy weeks

The only month in which four weeks (28 days) is the month of February, that is when the year is not a leap year, and all other months are either 30 or 31 days, and the following table shows the pregnancy in weeks and months: