I have my anatomy ultrasound later this month that will tell us gender. My mom and I are very close and she asked to come with me and my husband. I didn't see any issue with it but my husband got mad. He said this should be just a "you and I" thing. He doesn't want her to go. My mom was rather excited about the idea of going as this is the last ultrasound I get plus her first grandchild and now I have to tell her she can't go. This is stressing me out. He says parents never come to these unless they're single.

Am I wrong for wanting her to come?