Toxic mom

So recently my mom told me that I need to lose weight. I had a baby a year ago and it’s been impossible to lose the baby weight. I’ve tried and tried, it’s just not going anywhere. And she’s bigger than me so I don’t see why she gives a shit. But I told her that I’m trying, but I’m trying be content with my body and that my husband loves it and doesn’t really want me to lose the extra weight. She told me that she knows from experience that he just said that because men want to keep their wife’s fat and unattractive so they think they can’t leave for anyone else. I know that she’s full of shit and I know my husband truly loves and is attracted to me. But it still kinda bugs me sometimes. And every time he tells me that I look good, or beautiful, what she said is always lurking in the back of my head waiting to make me feel like shit about myself. He’s never said anything to make me think he doesn’t like my body and he compliments me everyday. I just wish she never said it.