I started the Dukan diet two days ago and have been making the pancakes which require a spoonful of artificial sweetener in the recipe. I've never touched the stuff before. Last night I woke up with the most excruciating chest pain, honestly wondered if was having a heart attack. DH managed to convince me i wasnt but googled description of my pain and the word 'aspartame' came up straight away as a possible reason. This has really frightened me, I had no idea it could cause this