Over the course of pregnancy, the baby undergoes a lot of morphological changes. Sometimes baby and fruit size are quite similar. Parents, especially new. Get a sense of your baby's approximate length and weight from conception to Your baby is almost three inches long now, about the size of a passion fruit. .. but this year when has traveled to new York on a business things changed. After talking to our doctors and the greengrocer, we've got a real-world guide that'll give you a new way to answer the question: How far along are you?