Hello, You are advised to take antibiotics and analgesic prescribed to you. For now, stay away from Marijuana. If in pain, you can take the pain-relieving medications prescribed by your treating doctor. Taking Marijuana will increase the risk of inflammation associated with oral mucositis. Marijuana also triggers drying of the mouth, dry mouth will delay healing (put you to risk of bacteria and tooth decay), put you also at the risk of soreness and burning mouth. It may cause tooth sensitivity too. Marijuana also causes staining of teeth, which at present you will not want. Marijuana contains carcinogens / carcinogenic substance, due to which there is an increased risk for pre-cancers and oral cancers of the tongue and floor of the mouth. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Nupur K., General & Family Physician