Gus had phantom pain , it started about 5 days out. At first his outburst sounded like he was hit by a car, they only lasted a few seconds but would rip your heart out. We started gabapentin at that time and that seemed to help. It lasted about 4 weeks with him just having a mild whimper by the end of it. Sometimes the meds play games with these guys, Gus didn't get along with tramadol so we had to stop it, and he was better after a couple days, which at thattime we had him on gabapentin and rimidyl. Yep, one of the common side effects of this kind of surgery, parent gets very little sleep. Here we try to tell new people sleep whenever you can, it can become a luxury, but usually after a couple weeks both days and nights seem to start becoming normal again, so hang in there. Good luck, Spirit Gus and Dan