What does it mean!?

I took this opk (because I'm in my tww and didn't want to pee on the actual hCG stick...im an addict I know! Lol) but, I took another opk may 23rd and it was positive so of course did the BD and used preseed. Now since Monday the line has been getting darker. Of course this isn't a positive but it's damn near getting there. So im confused? Is it possible to ovulate twice in one cycle? My AF isn't due til 6/7 according to glow. Has anyone seen this or has had this happened to them before? Need all the advice I could get!! Thanks ladies and baby dust to you all!!!