ultrasound reveal..

so my appointment to find out what we're having is 3 weeks away. I already told my mom and grandma that they can come but now my bf's mom wants to come since my mom is coming🤦‍♀️ my bf's mom kept telling us before that "were having a gender reveal party wether we like it or not".. so I don't think she should come since she wanted to wait to find out what the baby is.. I also don't want a bunch of people in the room at my appointment... WHAT DO I DO?! oh and let me add in I don't really like his mom anyways😑