Gaining no weight after 21 weeks?

Le

I feel like I’m eating a lot and I’m just not gaining any weight. It feels like everything I eat just goes straight to the umbilical cord. I’m not complaining that my baby has all her nutrition but shouldn’t I be gaining weight? I’m overweight pre-pregnancy anyways (220 at 5’9) so maybe I don’t need to gain much.

My ob told me to watch out for the second trimester because a lot of women gain too much too fast and I’m over here like... 222 after 21 weeks. That’s like 0.09 lbs a week.