I applaud your will to become drug free. The road ahead is not an easy one, but with determination and strength of conviction it can be done.
While the withdrawal in itself may not be dangerous, withdrawal symptoms are usual with heavy use and relapse is common. Methamphetamine-induced hyperstimulation of pleasure pathways can lead to depression and fatigue months after you stop using. It is possible that daily amino acids L-tyrosine and L-5HTP/tryptophan can help in your recovery by making it easier for the body to reverse the depletion of dopamine, norepinephrine, and serotonin. Tell your family that you were diagnosed with chronic fatigue syndrome and need help for a while if yo need to explain your condition and stop using. Eat healthy, stay away from simple sugars and sodas, take a multivitamin every day. Force yourself to take daily walk or do some form of moderate exercise and stay intellectually occupied. I hope this helped. Good luck to you.