My belly wont grow

Monica • 36 yo, mother of 2
Hi guys, im almost 19 weeks now and my belly hasnt grown much. I had a first period when all my waist line just lools like im just fat all ober my waist, and then stopped. I meet all other momies to be and they all have nice round bellies and boobs...not me... Im not worried, just would like to hear if other people have the same? Thanks