I had clavicle surgery Tuesday afternoon under general aesthetic and on Thursday from about 9am had stomach cramps and diarrhoea, fever, & sweating. The fever, sweating and diarrhoea have now stopped, but I still have severe cramps. Between 10pm on Tue and 1am on Thurs I had taken 8 x 30/500mg Co-codamol and 6 x 400mg Ibuprofen as prescribed, but have stopped taking them in case they were the cause. Any ideas?