What are some things u ladies eat to help gain weight while pregnant

I mainly ate fast food and home cooked meals and snack and drank a lot of liquids my whole pregnancy and gained a bunch of weight

I'm pregnant with my first child so I been gaining a lot of weight

I'm due next month so my pregnancy is slowly ending

What did u eat

I ate peanut butter and jelly sandwiches a lot and I would drink boost in between meals to add calories.