My girlfriend, who is 18 years old, had a lump surgically removed from her breast on Monday and has been taking pain meds after it. On Friday, she stopped taking the meds all together and has since been extremely angry. It has only been 2 days since she stopped and she is already acting like a completely different person. She has never acted this angry before. Could this be because her body is feeling withdrawal from stopping the meds? If so, what can she do to stop being so angry. I am so worried about her.