Struggling with MIL

I just found out im pregnant about a week ago. I have not announced my pregnancy on social media yet, mostly just because I’m only 6 weeks. Well my mother in law is continuously tagging me in posts that make it seem quite obvious, especially since I’ve had THREE people message me asking if im pregnant because of her posts. And then tagged my mother in a Happy Grandparents Day post. I’m just not really sure what I should do. She keeps saying she’s excited and she’s sorry, but this is my first child & im not even getting to enjoy the privacy of it. I feel like I might as well just announce it since its stressing me out so much.