I did drink a lot of fluid last night and was peeing every hour or so before I went to bed. I hadn't drunk much at all when I did the afternoon test yesterday that came up "Pregnant" on the digital one. I hadn't thought of dilution - I guess it is possible and those digital tests are apparently not so sensitive (50?). I keep looking at those lines on the POAS ones (I brought them to show the doctor this morning - I have an appointment in 40 minutes). I'm feelin queasy (but that could be nerves or my toothache), my boobs are swollen and sore and i still have some cramping, but AF is 4 days late now. Only time will tell hey - it's just doing my head in!