have no idea when last AF was - perhaps middle of november. I have pcos so used to irregular cycles. Tested today and have been falling asleep all the time since the weekend before xmas. Got a positive from a tesco test in the middle of the day. No idea how pregnant I am. Do those new ones that tell you how pregnant you are actually work? I think I might buy one to just set my mind at ease before I go charging down to the doctor etc.