my future mother in law

okay guys this woman and I have gotten into it numerous times over petty stuff that she thinks she rules the roost with my fiance and our house and my children . we just found out we were finally expecting one of our own . my children are from a previous marriage. she decided to tell me that she doesn't like the idea of us conceiving just to have the baby die is her own words. like I don't feel this shit myself. like she doesn't think i need to keep trying for a baby one day and she said I have had to many miscarriages. I couldn't believe she said die. like that hurt my feelings then continued to say that I'm probably not pregnant. it's probably my ovarian cyst. like how much more can one say to make someone feel like crap . then she said because of my knowledge and how much I know is from googling . she just won't admit I am smart . she's an RN which cudos to her but I out smarted her by calling the hcg causing cyst a corpus loteum cyst she thought I googled it her exact words . . this woman males me feel like I'm stupid . I just needed to get that off my chest