Rant you can't say things like this

Arg I posted a picture of me where you can see the size of my belly (I'm 39 weeks) and someone commented saying "wow your going to have a big baby" I'm not too upset with her since she is 20, can be a bit clueless and probably hasn't seen many full term pregnant women. The one I'm pissed about is the grandma of a close friend who died (so I feel I can't delete her as a friend) she had two kids of her own and should know better but she said "you sure you aren't having twins?" And earlier this week I posted something about wanting the baby to come soon and she commented saying "a few weeks out and you're going to want to put them back where they came from." She always has strange comments like that but man the twins one just makes me want to scream especially since I just found out this week that I have really gotten a lot of stretch marks (they were kind of hiding under my bump.)