I use CB digital and the lines do seem to get darker over time. If you haven't got the smiley face yet then perhaps the line will still get darker? It probably means you're in your fertile window anyway so a good time to try!Help needed so this is my first month using the clear blue pink and white digital opk. Today should be dotted circle on Flo so I have done the test this morning and no smiley face but as I pulled the test out the 2nd test line was the same as the line that’s always there. Does this mean I’m close or does the lines darknesses not matter on these digital ones?