Polysomnography is used to diagnose, or rule out, many types of sleep disorders including narcolepsy, idiopathic hypersomnia, periodic limb movement disorder (PLMD), REM behavior disorder, parasomnias, and sleep apnea.
Calculating Due Date: Estimated Due Date. Based on the last menstrual period, the estimated due date is 40 weeks from the first day of the period. This is just an estimate since only about 5% of babies are born on their estimated due date.
This is not your mother's pregnancy due date calculator. We have perfected our FUN due date calculator over the years to give you the most, and the most accurate, information about your due date and stage of pregnancy. Calculating your due date is easy! Simply enter the first day of your last menstral period in the form above, and click the 'What's My Due Date' button.