I'm sorry to read this indigo 1015,
I'm sure that your mom doesn't want you to feel this way towards yourself or your own body.

I have struggled with my body perceptions as well, but I wouldn't ever want my daughters to feel bad about themselves as I express my own feelings towards myself. My point is that your mom may be so entwined with the concept of perfection, that she's accidentally hurting you and others in the process.
While I don't know her or your family, I'd like to give her the benefit of the doubt and suggest that she's so devoted to perfection that she doesn't realize the pain that her behavior is causing others (like yourself).
You certainly aren't alone on this topic. A lot of people are hyper-sensitive on body image. Imo, it's a difficult issue for others not to take personally. As we all have bodies, and we all want to be considered fit or attractive. That doesn't mean that she wants to hurt you ~ I think that she's simply oblivious.
Have you tried expressing how you feel towards her, and seen her reaction? I mean, being perfectly honest about how her comments about herself put you down further? Is she willing to work on this issue to re-obtain a healthy relationship with you? I sure do hope that your mom is willing to both listen to your concerns and work on overcoming them.
Very best wishes to you!! ((((hugs))))