Gaining weight no matter what!!

Trina
Alright so I feel like crap 20 weeks and 6 days Basically 21 weeks. Anyways all I wanna do is eat but I choose healthy foods and take small walks. I also do Salk work outs. I stay in the house most of the time. I am not big at the top just my butt and thigns everything is manly toned just been getting stretch marks everywhere but my belly not sure why I guess it was gonna happen. Anyone else having some issues? I go to the doctor march 15th my last visit was Feb 14th and I have already gained 5 pounds since last visit I don't understand. Baby has been moving like crazy past week.