I'm sorry but telling the OP to avoid doctors is pure nonsense. Without ESSENTIAL DETAILS from the OP (stuff much too personal and lengthy to discuss online), making generalizations like that are more than likely to lead to confusion and doubt as the OP (and others) struggle with "the big monkey."
I'm glad you got clean your way, and I'm not trying to hate... but you are YOU and the OP is a completely different person with a completely different set of challenges, skills, and his own unique physiology and life experience.
Addiction, like other mental illnesses, is pervasively misunderstood in this country... a common expression of this are friends/family/doctors/psychiatrists who might say "you are x/y/z and need/don't need x/y/z"... it's not that simple. Also there's 12-step programs... while capable of providing much help for certain people... a major flaw is that they still cling to '50s-era groupthink about what it means to be "clean" or "in recovery." 12-step-isms such as "clean time," and the emphasis on "cold turkey," "every drug is a bad drug" can bring more harm than good in many cases.
You are trying to replace harmful behaviors with positive ones. Give little credence to people/groups who preach methods and hardline definitions. You must be your own leader in this process and attempt to define progress only as it relates to your physical and mental improvement as you see it. Forgive yourself for setbacks (they are part of the process) and reward yourself for progress.
People have an unfortunate way of declaring victory before the war is over, usually because they base their progress on things like "days clean" "got a job" "got a hot bitch" "doing better than the other guy." This is a natural thing--- it's how we as a society have been groomed to think and feel.
Do not compare your progress to anyone else's... set SMALL goals that are realistic and accomplish them.
For instance, in regards to your original question OP, I, personally, would not recommend cannabis if you are in withdrawal... In my 10plus years of battling the disease of addiction, and in my daily work with others who do the same... I've found it's the rare exception that someone finds cannabis an effective tool to soothe the physical and mental anguish of opiate/opioid withdrawal. Most often I've seen it cause an increase in emotional symptoms like panic attacks, crying spells/mood swings. I would attribute this most to THC, NOT CBD, and it's action as a mild psychedelic. Then again, I am not someone who will say "don't under any circumstances..." because there indeed are people who find it effective. I know those who have found EDIBLE formulations of cannabis or high-CBD strains like Harlequin helpful in treating specific symptoms of withdrawal. These are people who have used them on a strictly as-needed basis in low to moderate doses to treat specific symptoms.
OP-- PM me and tell me how you're doing. I have worked with addicts of all ages, sizes, colors, and each person is different-- progress most often comes from a WIDE variety of therapies, usually a combination of closely monitored, highly regimented medication therapy, talk therapy, and holistic therapies like massage, exercise, meditation, prayer, acupuncture, etc. Again, you are a unique person, and will figure out what honestly helps, what doesn't, and what to avoid.
Congrats on coming this far-- you're experience can and will help others, including me.