Pregnancy weight gain

Keisha • 23 🌮🍷 Momma to a baby boy 💙 Girl due Nov 2019🎀Wifey to Mr. J 🥰💑👪

So I'm 22 weeks today, I'm 4'11 so I don't want to gain too much. But I've gained 16 pounds so far, to be honest the only place I can tell Ive gained weight would be my boobs and belly. Everything else basically stayed the same. I've been eating as healthy as I ever was, and exercise is about the same for me.

At 16 weeks I only gained 12 pound at that point so according to my calculation I've gained half a pound a week since week 16. I read I should be gaining a pound a week at this point? Correct me if I'm wrong.