Pregnancy Calculators
This is a pregnancy calculator for the estimation of the pregnancy schedule based on the due date. Your healthcare provider will tell you the due date, usually base on the sonograph, on your prenatal visit. If you do not know your due date, you can estimate it use our due date calculator based on your biological cycles.
The results of this pregnancy calculator are estimation based on average.
Reference
Pregnancy is the carrying of one or more offspring inside a woman until delivery. Childbirth usually occurs about 38 weeks after the conception or about 40 weeks after the last menstrual period. The WHO (World Health Organization) defines the normal term to be 37 to 42 weeks. During your first OB/GYN doctor visit, the doctor will normally tell you the estimated childbirth date or the due date, mainly by sonograph measurement. This date is normally the 40 weeks date. The actual length of pregnancy depends on various factors. For example, the first pregnancy tends to last longer than subsequent pregnancies. Fewer than 10% of births occur on the due date; 50% of births are within a week of the due date, and almost 90% within two weeks. If you do not know your due date, you can use our due date calculator to estimate. The 40 weeks of pregnancy is typically broken into three periods, or trimesters, each of about three months.
Pregnancy can be detected via pregnancy tests, which detect the hormones level. Clinical blood and urine tests can detect pregnancy 6 to 8 days after fertilization. Blood test is more accurate. Home pregnancy tests are urine tests, which normally can detect pregnancy 12 to 15 days after the fertilization.
A balanced and nutritious diet is very important for both the mother and the baby. Adequate periconceptional folic acid intake has been proven to limit fetal neural tube defects, preventing spina bifida. DHA omega-3 is a major structural fatty acid for the brain and retina. It is important for the mother to intake adequate amounts of DHA during pregnancy and while nursing.
The proper intake of nutrition is normally accompanied by weight gain, which is necessary in most of the situations. The amount of weight gain recommended during a singleton pregnancy varies among women. The Institute of Medicine recommends an overall pregnancy weight gain of 25-35 pounds for women with normal weight. Underweight woman is recommended to gain 28-40 pounds. Overweight woman is to gain 15-25 pounds, and an obese woman to gain 11-20 pounds. Please use the pregnancy weight gain calculator to evaluate your specific situation.