She's 25. For the past 18 months every 3/4 months or so she's had a day and a night of really severe sickness and stomach pain. Then a day of utter exhaustion, then 2 days when she slowly recovers. Always the same pattern. She's kept a food diary-no clues. She is healthy and happy. She lives with her partner, who isn't affected although it only started after they moved into their new flat. She's seen the doctor who did an h.pylori test-negative. No medication except the pill-and she hasn't changes that. She's going back on Thursday to talk about what to do next. She's not a complainer-and the pain makes her cry. She was practically never sick when she was a child. Any ideas? Oh, she's given me permission to ask on here and to answer questions.