OPK confusion

This was my opk last night around 6pm. This morning when I took another with SMU it was a stark negativ, super faint test line. Do I count this as my positive or did I just not ovulate this month? Hubby and I bd'ed today just incase. Anyone have experience with this? I should also add I had a miscarriage in September so I don't know if that messed with my ovulation. I have had a period since then though. Last one started October 19 but I usually have longer cycles. Thoughts?