Are you supposed to be gaining weight every week?

Tamara • Mommy to my 2 beautiful baby boys, Nathan Louis💙 born August 12, 2017 and Parker Joseph May 6, 2019❤️ My whole world😍

I lost 4 lbs then gained it back and now at the same. Is this okay or should I be gaining more? Currently 36 weeks and 2 days. Should I be eating way more?