I'm expecting my first baby at the end of May and I want to get some sort of carrier, mainly for outdoor use like walking the dog where a pushchair can't go. I also like the look of the breast feeding butterfly thingys for discreet feeding when out and about. Do I need a carrier and a butterfly? Or would a stretchy sling do both jobs? Am planning to get second hand so suppose I can stretch to two things if I have to! Ease of use is also important as have no previous baby experience, can see myself all fingers and thumbs!