Question and a rant

I'm high risk mommy with baby #2 I have been in thee worst relationships u can think of and have had 2 babies beaten out of me by two different Exs..
I have 1 child by an ex who I'm not with were better as friends.. I'm now with a new man he's my best friend my everything no issues never fight weird but it works!!
I recently moved my mother in our I law suite to help her get away from her now ex abusive BF... Obviously you ladies would do the same for your mom.. Right?? 
I have a baby sister she's 23 I'm 28 she's no detached from mom is a lesbian and not working and with a girl this family has officially had enough of after 5 years of her lying stealing cheating and drama our family is just done!
My sister had a fight with the gf and came to my husband and my home.. She went threw MY tablet with MY Facebook I and went threw all MY emails and texts ...
I guess my mom told me stuff on FB messenger and I wasn't too know and my sister saw it..
She leaves and basically blocks me my husband my mom and family..
She messages my mom telling her how I'm a perfect kid my perfect family with my perfect life my perfect job and perfect beautiful home.. That I can shove it up my ass and my unborn child can die because I'm nothing to her...
But I've said nothing wrong or done a dam thing wrong...
She's threatened to have cops arrest me for having my mom here who won't give my sister her morphin pills she her self left her the day she same!! My mom wants nothing more to do with her..
My sister told my mom to fuck off and go to hell and basically die cause she doesn't care..
And I'm being blamed for it all like I did something wrong!! And I didn't do a damn thing wrong I just got put into the hospital yesterday and was admitted due to high BP and headaches ..
Like am I wrong for never wishing to see her or ever have her near my home again.. 
I'm scared this stress is gonna set me into labor early!
I don't deserve this drama or crap at all!!
I feel like my sister who is lazy has no ambition in life or will to get an education is some how blaming me for her failure I'm not your mother or the reason you do nothing!
I've told her grow the hell up!!
I think for my family and me its best to just let her go I don't need the drama or the bullcrap from her..sorry for a long rant I'm not happy and on top of it my baby's life is at risk..  :(