hi i need bit help please but what it is is ive been using tesco opks and last month i got 7 pos in a row. and so far this month ive got 4 till now so i brought the clearblue digital one and it was neg today no smiley face yet the tesco opk is pos very strong too. heres pic off todays test the tesco one and the cb digi .can any one advice wat test i should go by please .. ty all