Mine were really similar. I got sick the day I turned six weeks with both of them, the only difference was with DS it went on for a good month longer than DD. Once the m/s went away they were pretty much identical.

Except I stayed pregnant for two weeks longer with DS as well.

When I look at photos of my belly from both pregnancies I can only tell which was which by the dates. My belly looked exactly the same - like I'd swallowed a beach ball