Well, you're right about stress being one factor - the other is that I found after I came off the pill my cycle length changed after about 4 months, which is a good thing I think, a sign your body is properly flying solo without the pill's influence any more.
Or... you could be up the duff of course! Clearblue's pretty sensitive but try again in a couple of days
My plan is to not test again until Saturday if AF still hasn't arrived by then. I may have gone mad by then though.
And yes josie, I wondered if it was in fact my body just getting into a real ovulatory cycle, which is possibly longer than the last few (tut - what a waste of all that bonking over the last few months.... )
Ah well. I don't really feel I am pregnant - I know those tests are really accurate. I'm just clutching at straws really.