I am not due for AF until the 14th march, think I ovulated on 28th however I went to be a part of a study and they did a pregnancy test and the test line flashed dark purple and then went very light. The midwife counted it as positive but I don't think that's possible as I was only at cycle day 16/ 3 dpo! I've taken frer and it's negative. I'm not sure what to think and so impatient to wait until next week to retest!