@lilypaws You sound like me and put on very little in your pregnancy. By the time I had each baby I weighed less than when I started. It was great. Most people struggle to lose their pregnancy weight. I have a bad back too but I am not having surgery. They always tell me there is nothing they can do and I have to put up with it. Maybe being smaller and lighter hasn't helped our backs. My babies were big too. Were yours big babies, because I think it was a lot for our backs to cope with. I remember being well into my 2nd pregnancy and carrying the 2 year old at the same time. Not good. I hope you can get your surgery done soon and that you have a wonderful result.
Meanwhile, how about some diabetic chocolate. That would have less calories wouldn't it?