Hi Shari,
I would definitely say with all the Clear Blue products, digital and FM, only read the results from the digital display. However, I use bith First response Ovulation fertility kits and CB digital ovulation test and the FR is always gives a positive 2 days before the CB digital. However by the time the CB digital shows positive the line on the FR is practically as dark as the line can get. So I would say the CD tests give you a more accurate fertile period, but for BDing as semen can live for ~5 days I BD as soon as I get +ve on FR and use CD to simply pinpoint OV. Complicated I know!
Let me know how your other test goes!
