Im sooo hungry

This is my third pregnancy. I'm only 3 weeks 4 days in and I'm constantly starving! I gained 50 lbs with my daughter,60 lbs with my son. I look 3 months pregnant already! I don't want to gain more than needed because the bounce back isn't the same as when I was 23. What can I do other than drink water ( which I have been, a lot) to not stuff my face all day and feel satisfied? Please help!!!