opk strips questions! ๐Ÿ™‹๐Ÿป

Karine ๐ŸŒท โ€ข Mom of two handsome boys.๐Ÿ’™ English is not my native language! Please excuse any mistakes.โœŒ๐Ÿป

how long does the line test as dark as the control line? i'll explain ; I test this morning and the test line was dark but not as dark as the control line so i took another on mty lunch break from work, and it was really dark, even darker than the control line but i took another one 5 minutes ago and it's already a a little fainter. ๐Ÿค” is it normal? maybe i drank more water and it's more diluted. I'm fertile for how many hours/day?