Second thoughts about the announcement πŸŽπŸŽ„

Hi
I had this great idea to wrap up my test for Christmas for my man and I did wrap it up in a nice little box that on the inside says Roses are red and violets are blue... Then under the tissue paper is a card with the test that says We're DUE to grow by two feet, but lately I'm having second thoughts about it. I thought it would be nice and fun, but now I'm feeling scared and nervous about this. I'm scared he's going to get upset over this. He has said that he doesn't want another one and we just had a baby 8 months ago. I'm happy for this Baby and super excited, but I'm scared he's going to be mad. 
I have had such mixed feelings about this announcement. It'll at a friend's Christmas eve party tomorrow. Should I wait or go ahead with the surprise?? Should I tell him today or tomorrow?? Idk what to do!!  πŸ˜£