So I am a drug addict

My newest dilema. I am a drug addict, not to illegal drugs but to percocet. They gave me this after I was discharged from the hospital for pain. When I went back down for my recheck they gave me another prescription which I filled, they said call a week ahead so we can mail you a prescription since it is a narcotic it has to be a written prescripton. I called last week. After a few days of no returned phone calls,etc, one of the residents finally called me back. She wanted to know whyI needed a prescrip so fast, so I explained the whole thing again. Yesterday the prescription arrived... it is dated for May 10. Yesterday I felt kinda weird, like I was going to pass out, just not right, and ya I had cut down on my percocet as I was getting down there in pills. So today, I know I only have 2 percocets left, so don't take any. Again this afternoon I feel that " I just don't feel so great feeling, jittery, anxious and I think hmmmmmmmmmmmmm I wonder if it's from not taking the percocet, so I look it up on the internet and it clearly says do not just stop taking percocet, you may have withdrawel symptoms.... so I am thinking yup this is what is going on. I call St Louis and say thanks for the refill but it is dated wrong. My local oncologist doesn't prescribe percocet, so basically I am going thru withdrawel on top of everything else, oh yeah! I guess if it gets worse I am going to go the e.r. and see if they can give me a prescription for percocet to get me thru until the 10th. I wish someone would have told me you can't just stop taking percocet, but then again I wish the Dr would have written down a correct date on the prescription. So, it's official I for the first time in my life am wondering how I can get my fix of percocet... all I can do is laugh about it,