Gaining weight

Hi, I’m really trying to gain weight. I’ve been small all of my life and my weight is starting to go to my belly now. I have a small pooch and honestly it lols like I’m bloated all the time. I wanna get rid of this stomach bad. I ’m really insecure of my body. please give me advice on how to gain weight while also losing belly fat if possible. I know abs are made in the kitchen so I’m working on changing my diet. What healthy foods should I eat? Please any advice would be appreciated. my current weight is 110.