Crazy family

Dear lord I need some advice! I am 35 weeks pregnant and have been dealing with bs drama from SOs mother. Not only did she get married to some random guy after only 3 weeks of knowing him but hes an alcoholic. Also now wants SO to go on vacation with her randomly now. Who in the hell does that!!! I have been having issues health wise and dont even think ill make it to term and she knows that! But I am not infringing on her right to whom ever she wants to marry but I do not know him so there isn't going to be very much contact with my son. I need some sane help right now because idk what to do......