Home » Calculators » PregnancyPregnancy First day of your last menstrual period Please, Enter all values correctly.Estimated Fertility DatesEstimated Conception DateFirst Trimester Ends(12 Weeks)Second Trimester Ends(27 Weeks)Estimated Due Date(40 Weeks) PrevPreviousHow Many Weeks Pregnant NextSafe DaysNext How useful was this post? Click on a star to rate it! Submit Rating Average rating 3 / 5. Vote count: 4 No votes so far! Be the first to rate this post.