My SIL basically wants me to have a miscarriage because she has had trouble getting pregnant

Francesca • Mommy to two amazing little boys!!
I'm so stressed and it's making me sooooo worried that it is going to effect my baby. Long story short, we told our parents about our pregnancy on Mother's Day, and decided to tell my SIL last night. She has three children, had serious complications with her third and delivered over 2 months early. She was advised not to have anymore children AND can't even afford the Ones she has, but is still trying and has had two miscarriages. She was super upset when we told her that we are expecting baby #2, and basically told me today to watch out what I said to a mother who has losses a pregnancy, because my "precious cargo isn't out of the woods yet." I am so disgusted by her, I totally ripped her a new one. The only thing is, now if I have a miscarriage I can't help thinking how much joy it will bring her. Ugh, so sad/pathetic/frustrating. I don't need this stress right now.