Pregnancy Calculator Congratulations, you’re pregnant! When will your little bundle of joy be arriving? Just enter the date of your last period and our calculator will do math for you! Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Reddit (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)MoreClick to share on Tumblr (Opens in new window)Click to share on LinkedIn (Opens in new window)