Since coming off BC about 18 months ago, it took about 6 months for my periods to settle down to being regular. Clockwork, every 27 days. Now I'm 9 days late, and I've taken 3 pregnancy tests (over the past week) and they have all come up negative. I had used the Clear Blue OPK to test for peak fertility, and that was indicated on 29th Jan, meaning ovulation would have been around that time, or a couple of days later? Anyone experienced the same thing?