Im so confused!!!!

The top opk was yesturday at 2:00 pm the next was that same day at 8:30 pm and the bottom is today at 10:20 am? What happend i had a +opk then it got light and now its even darker than the first one!!! Ughhh this is my first time using opks and were doing the smep and i feel like i may have messed it up :/ today will be our 3rd day of bd as i got my first + on "break day" im so concered to bd to much or not enough :(