OPK Oddessy

I have broke down and bought myself the expensive OPK's from first response. Today is CD 9 and this is my opk..I have to be able to determine when the left line is darker than the right(control) line, apparently I should be doing this sober, as opposed to our newest method of conception... getting shitfaced and stumbling through sex like a couple teenagers at prom. I will keep posting each day, let me know if you see a + before me..