Pregnancy Calculator Parkmed NYC Pregnancy Calculator/Sex CalculatorDisclaimer: The only way to determine the extent of pregnancy is to be seen by Doctor and have a sonogram performed. You can be far into your pregnancy and still have period like bleeding. You can not rely solely on this calculator to decide the estimated age of your pregnancy.When did your last period begin?JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember12345678910111213141516171819202122232425262728293031201720182019202020212022Number of days from the beginning of one period to beginning the next periodProbable date of intercourse that caused pregnancy with a range of +/- 4 DaysEstimated due dateEstimated number of weeks of your pregnancy todayENTER YOUR SCHEDULED APPOINMENT DATEJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember12345678910111213141516171819202122232425262728293031201720182019202020212022Estimated gestation of your pregnancy on scheduled office visit dayNOTE: The only way to be sure if you are pregnant is to have a pregnancy test performed by your physicians. The values in the preceding form are for reference purposes ONLY. The only way to measure gestational age is to have a sonogram.