Really irritated

As
So tired of my husbands mom making snobby comments about my pregnancy and my decisions to do stuff. Not felt good this whole pregnancy but getting better and she makes comments like " omg that's pathetic, that's 18 bottles of beer your husband asked you to lift not like it's 24". 
Then tonight I went up to bed and I get told "oh your going on to bed" that's pathetic. It's Father's Day. She could at least stay down here. 
I'm tired of it.