Question: 29 weeks pregnant how big is your baby?
Answer: At 29 weeks pregnant, your baby weighs 2½ to 3 pounds now and measures 15½ to 16 inches long. Though he's getting pretty close to his birth length, he still has to chub out a bit. In fact, over the next 11 weeks, he'll more than double — or even come close to tripling — his weight.