The rule of thumb is using opioids for 3 days in a row will start the withdrawals. On a relapse, Experienced users will start to feel them at 2-3 days in a row. I want to pre-apologize for the length of this reply post and if my intent comes across as too serious for the original question towards the group. Please digest this with an open-mind and try to accept my words as extending the beneficial value of one addict helping another addict(s). From taking prescription opiates/opioids for legit medical reasons to taking them for a "reward feeling & euphoria", I did not not understand the rip current, the depth of the water, the strength of the tide, and how far away from shore I actually was. !5 years ago degenerative bone disease & my heart disorders started, chronic pain turned into "chronic pain syndrome", many surgeries later, being disabled took hold, still requiring more surgeries, and the prognosis for degenerative bone disease & 3 heart disorders equals "poor."
If you have completely removed the drug from your system it is smart to put it in the past. I have lost count how many times I set boundaries of not going back then used one time and the cycle started over again. One of the many truths to relapse is an addict will pick up right where they left off and the disease of addiction always wants to make up for lost time. Anytime I went back to using, the horror show became worse. The bus to hell was on time, had a full tank of 11

ct race gas, and the engine & transmission was freshly rebuilt. Guilt and shame became worse and feelings of worthlessness became greater. I knew I clearly crossed the boundaries I set for myself.
Rock bottom has a trap door. There is a passage below the dungeon. A whipping post is always vacant. Everyday I get smarter in recovery, my disease gets another day smarter. I am accustom to chaos in my life, it feels most familiar, and order through chaos is how I made changes. It is very easy to hit "dry spells" in recovery unfamiliar to the next step required to stay on task. When this happens, many times subconsciously a blind default decision is made that seems rational at that moment. The "fresh recovering brain" remembers & acknowledges that a positive change happened as a result from chaos. Enduring a short stint of chaos or perhaps just one night of chaos will result in a refocused determined effort to continue the same drive. Sometimes a relapse is the driving force needed to dig deeper into a recovery program and it expected most of the time. It still doesn't make it the best option or decision.
I have been clean for 9 weeks before and got a new job. The exact moment I got my first paycheck the flood of compulsive using thoughts hit so hard that I ended up using that day. Just like the statement goes about the "lion behind the tree" waiting for me to wonder off course, waiting for me to not pay attention, and/or waiting for me to pull the surrender flag back down quickly.
My old sponsor taught me about creating plan's to help combat the compulsive desires to use. These are some of the changes I made in my life to help avoid
the "lion behind the tree" :
-- Allow a trusted family member hold on to my cash, debit & credit cards. Only giving me just enough money per week or daily to survive on.
-- Have a family member help out with paying my bills. This way I could not swindle extra cash for using.
-- Never leave the house with cash in my pocket exceeding $10. If I left with more cash, I would have an exact plan of what I was going to spend the money on.
-- Have a family member or friend tag along for shopping events to help stay on task.
-- Delete all previous contacts relating to using or linked to using. Create a different route of movement to avoid the areas I used to use in or score in.
-- Allow a family member to hold onto the car keys once I returned home. No sneaking out to score.
-- If I have the desire to use do not keep it bottled up inside. Secrets kept me sick and turned into reservations to use later down the road.
-- If I have prescription drugs that are controlled substances, let a family member hold on to them and provide the minimum daily dosage each day.
-- If I have prescription drugs that are controlled substances, have a family member pick them up from the pharmacy or have a family member ride along.
-- Do not hold onto tools to use drugs, throw them away. No burying a crack pipe in the backyard or stashing needles and spoons.
-- Start each day with a gratitude list and write down the daily goals creating a checklist to adhere to. No daydreaming, no idle hands, no idle thoughts.
-- If I work with using buddies, admit to them about the desire to make changes. Tell them to not talk about drugs around me.
-- At work completely avoid any old using buddies before payday, on payday, and the day after pay day.
-- At work make any contact with old using buddies very short. Do not get caught in boredom discussions with them or passing time discussions.
My old sponsor used to say "work the steps or die muthafucker"... He also used to say "when the pain of remaining the same is greater than the pain of change, then an addict will change. Who am I to stand in the way of me getting all the pain I need in order to change..?" When I first asked him to be my sponsor he replied, " Yes. 95% of your thinking is fucked up and the other 5% you need to run by me." I miss him and lost contact over the years. No one is sure what happened to him but we concluded that life happens after we were sure there was discord in his marriage.