looking for some answers here as it is only the 2nd time i have used opk's.

okay day 15 evening tested and came up with 2 lines but test line lighter so i took as negative

day 16 tested at midday and then around 8pm and both times came up 2 lines both as dark as each other so took as positive

day 17 tested 3 times lol morning noon and night all 3 times came up as 2 dark lines so again took as positive

day 18 last opk tested in morning and came up with 2 lines but the test line appeared lighter than the control line - however a few hours later the test line seemed to look a bit darker

so my question is two fold number 1: the opk on day 18 would you think that being a neg, is it posible for the test line to change colour after a few hours??

number 2 and most important i guess is based on these tests which day do you think it more likely that i ovulated, btw i had both watery and eggwhite on all of these days, ewcm mosting on days 16 and 17

thanks, i am getting so toey in the last few days of my tww