And here I have the complete opposite situation! I say whatever you decide to do, do what is best for YOU! If there is a time to do something for yourself, this is it! Screw the mother/father in law and explain to your husband how you are feeling about them, their comments, and the way they treat you. Ultimately, I think he should be defending you and putting his foot down with his parents. Disrespect is not cool. No matter who you are or how much you weigh. Seems like a pretty toxic situation overall. If your husband isn’t willing to support you through your journey AND work together to resolve any issues between the two of you, then you may have bigger decisions to make. Just my two cents.