I have recently re-started Atkins ( did it before- liked it - lost a bit of weight - got distracted - put weight back on again etc etc etc ). Something has happened both times that is totally weird - I have started a period entirely mid-cycle - started one today when only had my last one 2 weeks ago. Only when it happened today did I remember that the exact same thing happened before. I am on the pill as well, which makes it even more strange. I am not worried about it ( when it happened before it came and went and I had my next one on schedule, so effectively had 3 in the time I would usually have 2). Sorry if all this is seriously TMI but I am just very curious if anyone else has had this happen and if they know why??! 