The way vero is used here shows that both speaker and listener are almost 100% sure that it is a fact, kind of like:
- Sei incinta, vero? You're pregnant, right?
Really is a little different because there is some uncertainty and davvero or veramente might be a better choice.
- Sei veramente incinta? Are you really pregnant?
- Sei incinta davvero? Are you pregnant for real?