I had a c-section and used an Ergo starting at about 2 weeks post pardum (when my midwife gave me the okay). I couldn't use it for long at first, but by the time I was 4 weeks pp, DD rode in it a ton. At 4 months I would strongly recommend the Ergo (its kind of a pain with the new born insert before that). Awesomely comfy on your back. DD is 20lbs and I still can wear her on the front for short trips and on my back for hours.