Hi Ladies...not currently TTC so I dont really track accurately. My last AF was 3 Feb and I had unprotected sex on 19th Feb..he did pull out but im fully aware that is not always effective. I took the morning after pill on 21 Feb and now AF is approx 5/6 days late. I have taken 6 (!) tests but all BFN..the only symptom I have had is a bit of a sore back and a few wee twinges in my right abdomen, but I know this could be PMS too. Just wondering if its common to get false BFN when period is so late, or can I be fairly sure that im not pregnant?