23 weeks and not a big bump

Im 23 weeks today and my baby bump isnt very yet, sometimes its hardly noticable and makes me just look a little chunky. Is this normal? Im all freaked out about the baby not growing normal or something like. Everytime weve been to the doctor everythjng has come back fine, but i worry a lot in between appointments. This is my first pregnancy and im almost 5'6 and weight prepregnancy was about 129. I see all these women that look my size and their bump is so beautiful and noticeable.