Time to tell......

Maddy
So my mother, whom I've had a really rough relationship with my whole life....truely dislikes the man I'm with. We've been together 4 yrs on and off and now were having a baby! I'm 23 and he is 25 and the love of my life. He struggles with the fact that my mom is nasty to him...and I've almost completely cut her out of my life due to certain crazy things she has done to sort of "hurt us" to put a strain on our relationship so we would break up (She would do this cause she's crazy) and it truely had put a strain on our relationship because being close with his SO's parents is something he truely beleives needs to happen in a relationship, which I strongly agree with but my mother is one exception to this plan. I love my dad and he's always supportive of what decisions I make. Now I'm struggling of how to include her or tell her...this is her first grandchild! I've had a scare before and told her about it and she was so angry with me not because i was pregnant but because it was his baby, it was terrible. I also really want my SO to be with me when I tell my parents but he does not want to have anything to do with my mom...but I think it would look better if he stood by my side with this news. Were excited for baby but stressed out about what my mom is going to say or do! Any advice?? (Sorry long rant!!)