Cocaine
withdrawal is merely psychological, where as, Opiate
withdrawal is physical. Instead of reverting to smoking pot or taking another substance like Lyrica, I would suggest looking into vitamin, herbal and over the counter remedies to help you get by the first few days. Magnesium and Potassium both aid in neuromuscular communication, which will help your body alleviate your pain symptoms. Also, get yourself sone icy hot patches and take hot baths.