In laws crossing boundaries with myself and not others..

I placed up boundaries during my pregnancy and postpartum that were questioned and I was ridiculed over.. since then my relationship with my in laws has suffered. I have tried to move forward and rebuild that relationship but it’s very hard to let my walls down… especially now. My partners sibling has had a child and put up similar boundaries as to what I did at the time I had my child.. the only difference is there is no questioning of them and their boundaries and everyone is happily respecting them.

I’m feeling as though this is personal. My spouse thinks I’ve set a “standard” and that’s why there is no upset, yet I can’t help but feel otherwise. I know my partner is just trying to be supportive but why can’t he see what I see? Am I being too sensitive?