Is this normal for withdrawals?

I have been taking oxycodone and percocet for years for a severe back problem. ( I broke my back falling out of a tree, have screws and rods and severe arthritis. ) I am sick of taking the narcotics ( ALL prescribed, NEVER illegally or abused. ) I felt like crap for 2 days. I feel fine now! I woke up with zero withdrawals! I feel great! Will this last? I'm not going to wake up tomorrow and feel like crap again am I?? I did this cold turkey! Is the worst over?? Any input would be awesome! :-)