Today my wife went shopping for maternity clothes with a friend (who will be reading this at some point... hi!). I got lucky with this - I hate going clothing shopping with my wife. I'm sure every guy can relate: "Does this make me look fat?" Yes, it's maternity for God's sake! You're supposed to be big!
Anyway, she's kinda freaked out. She's still terrified she's going to miscarry, and buying the clothes was a waste of time. I think it's normal for her to be worried given our history.