My mil said some similar horrible things to me when we went for a visit a few weeks back. I'm thankful most of the time that we don't live that close to family. Sometimes, however, I wish we did.
Anyway, to answer the question, YES people laugh at me. In a mean way too.
About a week ago I was somewhere with my family when this lady and her daughter sat there and made fun of my swollen feet/ankles and fat arms, oh and look how huge her belly is, etc etc. It totally hurt my feelings. Thankfully dh didn't hear any of it or he would have put that lady in her place. I just ignored it and tried to get out of there as fast as possible.
Sometimes people suck.