Here is the thing, why would my OPK test kit be post for like 4 days, i never took one for more then one day in the past and got preg the first try. The first day it was two similar lines, which the box says, is a pos, then it got darker then the control line for 3 days, and then the 4th day it was still noticably darker but not as dark as the 3 days before. I never tested sat, bc i ran out. Has this happ to anyone else? Im sure its all normal, im just wondering still when i would have ovulated. This all started Tue last with the pos, as long as the box is right, when it says equal or darker line. The line only got stronger as the days went on. We had Sex Sun right before hand, and Tue and Fri. What do you guys think? Since it was pos for so many days i just wonder if i even had sex on the right days. Any oppinions would be nice. thanks!