Hi I am due on today, and I took a test yesterday and it said neg. took a test just now (both are the clear sign dip and read tests), only waited a min or so when my hubby called me for dinner. It said neg and now 45mins later it says positive. I would just think it was an evaporation line but I fished yesterday's out the bin and that still says neg. what do you think? I've finished the pack which is why I can't just do another one. Thankyou.