What symptoms may mean something more serious is going on?
If you get any of the following symptoms you should seek immediate medical attention. They may indicate a more serious underlying condition: Chest pain or upper tummy pain worse on exertion Difficulty swallowing foods or liquids Persistent pain on swallowing Persistent vomiting Vomiting blood or dark brown vomit Unexplained weight loss Altered bowel habit (diarrhoea [...]