I’m below my pre pregnancy weight...how can I gain weight fast?

Before I got pregnant I was 95 pounds. During pregnancy I was about 130. I am now 88 pounds.

I’m breastfeeding so I believe it’s burning everything! I used to have a nice bum, and during pregnancy it got bigger (which was nice-my husband loved it!) now I completely lost it. I mean I’m as flat as a pancake.

I’m super insecure. I don’t want to be super skinny. I want some curves to me. My husband says I’m beautiful, but I KNOW he wants me to have a fat ass 😂 any tips on how I can have some weight fast and work on my booty again!?