Mother in law

My mother in law and i haven’t really gotten along since day one. I am sarcastic and have a straight forward personality, while she is super sensitive and can be rude (she does that fake nice shit but she’s low key being mean) she has straight up told me before that she didn’t like me at first and blah blah blah. When my husband was talking to her told her we were trying for a baby and she demanded that she better be the first to know 🙄 fast forward we are now 12 weeks pregnant. When’s e told family and friends she took it upon herself to post it on her Facebook and post a picture of MY ultra sound. I haven’t even made an announcement on facebook. She literally texts me 5 times a day asking how i am, asks me if i am eating what I’m supposed to and asks for bump pictures. I told her when i get a bump i might send pictures and to stop asking me if I’m feeling okay, she also keeps posting all my updates i give her and family on her Facebook! I try not to use that much social media, and i have told her multiple times she’s not allowed to post any of my pregnancy or anything of my future baby. She is also demanding to be in the room when the baby is born. I have told her no multiple times, she keeps telling me I’m being rude and insensitive 😡 i feel like I’m going to snap at her soon. Any one else deal with this?