Okay, so I've been weighing myself when I wake up in the morning, I'm 19 weeks pregnant and I've only gained 2 pounds so far. I have a baby bump, and my boobs have gotten a lot bigger. Is the lack of weight gain anything to worry about? I have had no morning sickness really. I'm 5'10 145 lbs. I eat whenever I'm hungry. My fiancé and I are not "big" eaters. The ultra sound tech said the baby is heathy as far as they can tell.