Definitely wait. We haven't bought a double pram (however DS is much older than Isla), but we also plan to have DD checked after she is born - whereas DS didn't go into his brace until he was 7 months - much hard to fit bigger braced babies into prams/carseats etc.

Hopefully your baby will be given the all clear and you wont have to consider a new pram based on DDH!

Traveller - Love the strolli rider! I have been looking at skateboard attachments for DS, but waiting to see if we actually need one, but the strolli rider rocks my world! If we end up needing something I reckon this will be it