how long are you away for?
there will be a LL person somewhere near you - ring your LLC they should be able to help.
meanwhile, if you have to eat choose a small portion of plain protein and plain salad leaves.
Or if you think eating food will completely mess with your head buy slimfast shakes - not the same as LL but as a temporary measure would fool your head into not eating food. I know several people who have found it v v hard/impossible to get back into abstinence once eating again
good luck
daisy x