Hubby felt off Tuesday. He ached all over and just wanted to sleep. He had terrible tummy pain. No temperature. Wednesday he seemed a bit better. Then Thursday felt horrendous. Wanted to sleep, tummy pain and diarrhoea. He had constant diarrhoea since Wednesday night/Thursday morning. Immodium (or the similar brand we have at home) seems to be helping a bit but he's not really eaten since Wednesday. What should we expect in terms of feeling better?