hello every now & then I get a sharp nasty pain in the very top of my tum, can last 30 mins to hour or two, im 31 this started about 3 years ago, only hand full of times a year, this year since ive had norovisrus, its been worst, im being sick when I get the pain too, due to back issue ive had for past 2yrs I was taking a lot of neurofen tables