stomach size

Currently now im 37th weeks and i have a friend who is at 36th weeks but her stomach is bigger than mine. We are at the same height and size too. Her husband isnt very tall but mine is. Should i be worried? I dont usually eat unnecessarily, i dont have cravings. I eat when im hungry. Gynae mentioned that my baby's weight is of a normal range. I feel abit jealous that her stomach is bigger than mine, looks nicer :(