This was my first month using OPK - First Response Fertility Tests, these are from CD 14-17 (I’m a normal cycle 28-29) I wake up really early so that’s why I have been testing around 9am since I’ve been up for a few hours already and fits in my work schedule, but on 8/6 I started feeling cramps and bloated so I took a test in the evening after work and got my first positive result/LH surge. This brand States ovulation should occur within the next 24-36 hours after the surge (which started obviously between 9am on 8/6 and 8pm 8/6). I got another positive at 12pm on 8/7, but then back to negative today. We BD’d on 8/5, 8/6 and 8/7. Glow says a medium chance today as it’s still listed in the fertile window - but is it necessary since I already got a negative this morning? Really hoping this is our month!! (Test Line is the left, control is on the right)