Not sure why I am posting this but af started on the 10th of December and lasted 2 - 3 days ...pretty light and not many bloody clots. I then had positive opk on CD 3,4,5 and 12 and then on the 27th of December I started af again. Still pretty light but I've used one pad a day and the period is really runny and pink. This is the only time I've ever had a cycle of 17 days, usually I'm between 27 and 30 days. Has anyone had this happen before or could someone shed some light? Thanks in advance.