So I've been using opk strips since January after we lost our baby on December 29th. Well some months I get a positive, others I don't, my cycle is freaking nuts, this month I tested last Sunday and got what looked positive, so we bd'd like normal. Well a week later something just told me to test on an opk so I did and it's still positive. The test line was as dark as the control line on the one from the first Sunday. The one from the second the test line was way darker than the control. What's going on? Opinions please, I am stressed.