What do you ladies think

So I'm 12 weeks today and an appointment. Well my doctor is not happy with the fact that I gained 16lbs in a month. He said I should only gain 25lbs this pregnancy. I'm hungry every 30 minutes and I'm always sleepy. Ladies I'm 25 and have always been 110 -125 and I was 125 after having my daughter but I was all belly. I guess what I would like to know what can I do you think about my weight gain? I will eat healthier but being in my first trimester I was really eating whatever I was able to keep down. Help me ladies