Bodyshamers

My two cousins are ganging up on me because they wrongly assumed I was involved in an issue. Instead of talking to me, they keep posting Facebook Notes calling me a "whale" and insulting my intelligence.

I've gained weight because I have endometriosis, a medical condition, but they continue to body-shame me online. Their posts have been emotionally exhausting, and I'm wondering if this could be considered cyberbullying or if I have any legal options.