We understand how devastated you must be for the loss of sweet Quincy and send you our most sincere condolences. As other Pet Talkers said, he's at the other side of the Rainbow Bridge, where there's no pain or suffering, getting to know, and play with, all our beloved pets who have gone there before him.
If you need grief support, you could try:
www.petloss.com/
May happy memories of your time with Quincy bring you some relief from your pain.