Hi Moms - I'm having my second c-section in March and I'm concerned about carseat weight. Has anyone used the Doona as a carseat post c-section? We used a Chicco Keyfit 30 with our last child (the Doona wasn't out then). The Doona weighs 18 lbs (due to the built in stroller) whereas the Keyfit weighs 9 lbs. I'm worried about lifting the Doona in and out of the car, etc. post c-section but really like the built in stroller feature. Thoughts?