I tested on Friday and my OPK was negative. I was out and about all day Saturday and had a Halloween party to attend, so I forgot to test that day. Then yesterday, the lines were almost the same but not exact to show ovulation. Today the comparison line is back to being way darker than the test line, which is negative. Do you think since they were closer yesterday than today that on Saturday, when I never tested, that it actually would have been positive and that I can stop testing?