I had some old tzatziki for tea last night, I had a good sniff first and it smelt fine. However I can see this morning that what I thought yesterday was a sort of milk skin on the surface is actually a layer of whitish mould. I have had a sore tummy all night and feel slightly nauseous and under the weather today, but no d&v. If it was going to turn into full blown food poisoning would I know by now?? Im immuno suppressed so have no idea how this might play out...hoping Im out of the danger time period!!