OPK help

Madalyn • momma to two angel babies, three fur babies, and one rainbow baby boy🌈

Just trying to see if I should start BD. Glow and Premom are guessing I’ll ovulate on July 18 and my fertile window is July 13-19. I had a miscarriage on June 4 and bled from June 4-9. I just had my first period from July 4-8. We got pregnant the first month trying and only BD two times. I was just going off what my Flo app said my fertile days were. I’ve just started tracking my ovulation with LH kits. This is the darkest it’s ever been so far.

I know it isn’t positive but does this mean it’s getting closer to ovulation day? TIA!