I've been riding for 16 years now and I've always been pretty fearless on a horse. But about 4 month ago I hurt my back and I couldn't ride for 3 months, on Dec. 5 I had back surgery and have only just started riding again. But I everytime I ride, especially when I ride Amber (the 4y/o) I get really nervous, I just keep thinking about my back and what could happen if I fall. I'm really out of shape from not riding for so long. I don't know what to do, I don't want to be scared to ride, but I also never want to go through the kind of pain I went through when I hurt my back. Any advice?? Please!