Glad you still have your digits - a hand router is one of the most dangerous shop tools unless all precautions are taken. (as in, no short-cuts) I'll guess you attempted to rout w/o a guide on the already cut out body. Making/cutting guides and making sure they are stably clamped/adhered on the surface being routed when routing is key. Next time draw your outlines of the body and rout the blank before cutting it out for optimal router surface. (so it's not dangling off an edge) Once set-up, make shallow passages to get to the required depth - don't attempt to rout the whole depth at once. Also never lift it from the guide until it is fully off and always unplug it before changing bits. Do all the needful and a router is a very useful shop tool.
An analogy to, for those that question some of these suggestions... a friend of mine taught hang-gliding and he said it wasn't the newbies that died b/c they forgot to do their pre-glide checklist... it was the "experts" that didn't feel they needed to do things like *check the clip that attaches you to the glider!*...

