Oct16 33 weeks – Anyone for a Pina Colada? Posted on October 16, 2012 by admin 33 weeks – Anyone for a Pina Colada? 33 weeks: Baby weighs as much as a pineapple Your baby is proportioned like a pineapple when it comes to weight — a little over 4 pounds. (Length: more than 17 inches, head to heel.)