Weight gain

Kristen • 35 years old mommy to be again! 2nd baby in 2 years. I have a 18 mo daughter and a son who is 14. I just hit the reset button x2!! 😱👑😂💞
I'm 13 weeks and I've had no weight gain. But my middle looks much puffier. I haven't had any morning sickness and I'm eating normally. Anyone else? Is this normal? 
First pic at 6 weeks second pic at 12 weeks