I had the same thing. positive opk then a bleed a few days later, I know you can get an LH surge just before AF so I'm wondering if I picked that up rather than ovulation xx
I think that's what mine did 2 weeks ago. The line was the same color as the control line, but then I started the light bleed. The positive I got 2 or 3 days ago was way darker than the control line, so I'm crossing my fingers that I actually ovulated! I felt a bit different, so hoping I did. I think up until now, the 2 times I had light bleeds, the cycles were anovulatory. Not to mention way too short!
I don't think we really did well with the BD though. When we got pregnant, we were following the SMEP plan... so we had a few times in before I actually ovulated, plenty of time for swimmers to hang around and ambush the egg!
This time, I hadn't taken opk's for a few days, so I was really surprised to get that dark line so quickly! I
think I ovulated within 24 hrs of that line. We DTD starting that day, and have done it every day since. So hoping maybe we caught it, but not overly confident that we did.

Time will tell! Hoping the B6 has evened my cycle out a bit more as well. Either I'll fall preggers, or have AF. At this moment, I really wouldn't mind either one as strange as that sounds!