Can I wear Spanx?

dolphinsmakemesmile

So Friday is a big deal for us.  I have my NT scan in the morning and my nephew's confirmation in the afternoon.  We haven't really told any family yet (only my SIL knows-but she knew we were going through IVF). We're thinking of maybe telling after next Tuesday (that's when I have my follow-up with my OB since my scan is at the hospital). 

My SIL commented to me I am majorly showing.  She even said MIL made a comment to her, but she didn't respond.  MIL would never ask me (esp. after the miscarriage last year).  So, we want to hide it for a little bit longer.  I have a dress but I would definitely need Spanx to help hide my belly.  DH doesn't think I should wear the Spanx, but then it would be noticeable.  What should I do?  I keep telling him the babies still have room, but he doesn't want them squished.