I have come to realise that I get cramping in my lower back and tummy when I am ovulating, I have never heard of an exploding egg before it sounds a little bit funny when you say it like that doesn't it I just went to the toilet a little while ago and had the same thing again, the first thing I thought was implantation but then I was thinking too early as well, it's just a bit confusing isn't it, thanks for your input ladies