I don't think you will go back into full w/d but I do think you might be uncomfortable for a day or two. If I were you I would find another meeting today....go to it! Pick up another white key tag and start again. Don't quit! If I may also suggest, do the 90 meetings in 90 days!!! It helps to immerse your healing brain into recovery.
Also, cut yourself a little slack....you were clean 1 week, maybe you can make it to two weeks this time. You have to be ready to quit....and DON"T PICK UP....NO MATTER WHAT!
I agree with getting rid of the pills in the house. I was a couple weeks clean when I had a tooth pulled, the dentist wanted to give me 20 Norco 10's, it took everything I had to overpower my "addict" and tell him I would take 8 of the 5mg!!, and I took them for 2 1/2 days (amazing that I didn't chomp them all down within a matter of hours) and I had zero withdrawal symptoms after that, I did have some cravings, but they quickly passed, and the pain of the pulled tooth was over by the time I was out of the pills, and ibuprofen handled the rest...moral of my story, if I had gotten the 20, I woulda taken them all within a couple days, and woulda started all over again and went and re-uped my prescription with my treating physician. It took a lot of will power to not get the whole prescription, and at a lesser dose, but it was very freeing that for once, I was in charge, not my "addict". If you get rid of all the pills in your house, flush them down the toilet, I guarantee that after the little bit of sadness you feel, before you even leave the bathroom and turn the light off, you will feel alot more in control of YOUR life and YOUR mind! Just food for thought.