I can't win!

My husbands grandmother is famous for her word vomit, saying whatever comes to her mouth even if it's hurtful to others. At 20 weeks she told me I was too small that I wasn't showing enough to be 20 Wks and it must not be healthy for the baby. I ensured her that the baby is just fine and my doctor isn't concerned with my lack of weight gain. I finally popped the week later and now at 23 weeks she told me I must be having a gigantic baby because I look huge! I didn't think I looked huge but now it's all I can think about!  First I was too small and now I'm too big. Anyone else feeling like they just can't win?! Why do people feel the need to give their opinions about my body?!