what the hell

My boyfriends mother left her Facebook message open and i read it and she was asking the women for her friends number for her son and it needed to be hush hush. I am literally shaking. 1) how the hell could she. I've been with him for almost 8 years! We have a good relationship (or so I thought)! 2) I was pregnant a couple months ago and we lost our baby at 25 weeks! How could they both! What do I do?!