Feeling insecure.

Ive been feeling super insecure lately. Im 21 weeks pregnant and slowly looking more like a beached whale everyday. I know my husband cant be attracted to me anymore. And i always catch him looking at prettier girls with better bodies. He tries to play it off but i know what he is thinking. He certainly doesnt tell me im beautiful like he used to. Im just over feeling this way. I want my body back.