Hi there. I'm 16 1/2 weeks pg and currently driving myself round the bend about listeria... Have just eaten a yogurt which was 5 days before its best before date. The top wasn't blown up and it smelled and tasted fine, with just a slightly lumpy texture at the top of it, but you get that in a lot of yogurts. Down the bottom though there was a bit at the bottom of the pot with no traces of yogurt on it - either some had slid away without leaving a trace or there was a pretty big air bubble in there! Also at the bottom there was a little trace of something pinkish (it was white plain/vanilla yogurt with chocolate bits in). Do you think I need to worry? Any home yogurt makers out there - can it happen that a bit slides away leaving no traces or there is an air bubble in it and it's still OK? TIA.