Telling my parents!

Corrin
I had gotten pregnant earlier this year and when I told my parents I received a very negative reaction. At that time my fiancé and I were not engaged yet. When I told them I was later engaged she called my fiancé and told him that I was cheating on him for the entire relationship and she doesn't want for us to be together because she 'thinks I can do better.' I didn't talk to her for three months after that Unfortunately I lost the baby with a missed miscarriage in July (still not talking to her when all you want to do it talk to your mom). I had been dealing with depression and I found out that I am now expecting again on they day that my first was supposed to be due. She still does not approve of my fiancé and is not attending our wedding at this point. Should I wait to tell her or should I tell her right away? And how do I deal with another negative reaction?