I don’t know what this is and of course there could be a multitude of reasons. On Sunday I went to my allotment and ate some fruit ( raspberries, apple, fig). Shortly afterward my lips and tongue had a burning sensation which lasted a few hours. Then stomach cramps started, and they barely let up. I’ve had diarrhoea too. Not sure if the burning lips is anything to do with it. Is anyone experiencing similar? Is there a gastro bug around? Any comments / ideas welcome!