Weight gain

I’m 29 weeks today and have gained 26 pounds so far. Is this too much? I started out at 143 and now I’m 168. I still have 11 weeks to go and it’s discouraging seeing the pounds pack on when I try my best to eat right and watch my portions and not pig out on everything like I feel like doing sometimes. My doctor hasn’t said anything about it. But it concerns me since I was only supposed to gain 1 pound a week and that’s definitely not happening lately.