looking for advice please. i have recently been in hospital with gallstones. i am now on nhs waiting list to have gall bladder removed. however i am heading to calis on 22 june for 18 days and will not have been done by then. question is. if i have another episode of gallstone pain and needed hospital treatment or morphine as before. do i need extra insurance cover over and above my travel insurance? or what cost would be involved? thanks in advance for any help