CD12 - Spotting

This cycle is shaping up to be a weird one.  I finished AF on CD 6, this was quite a short bleed for me as it normally lasts 7-8 days.  On CD 8 I had some spotting and a very faint OPK.  CD9 I took another OPK and was surprised to find it far darker than I would have expected for so early on in my cycle.  Day 9 I had more spotting which was really dark in colour and had tiny clots and the OPK was so faint you could hardly see the second line.  I have had more spotting the past 2 days and yesterdays OPK was even darker then on CD9 though not yet positive.  Crazy!  I never have this amount of spotting/breakthrough bleeding, and normally my OPK's are really faint until they turn positive and then I have a few days of positives.  Through your this my temps have remained fairly consistent.  Who knows what is going on.!