Family drama help!

I need to vent! We are expecting after a m/c a year ago. We decided to tell our parents with small box announcement. We specifically told my in laws we wanted to wait to tell everyone and right after they posted it all over social media. I know babies are a blessing but I feel like they are taking it as publicity. They have been asking for my ultra sound to post it and so people would “think” its theirs. My husband is mad but we both don’t know how to tell them we want to keep everything private.