Since I love peeing on sticks I decided to do an OPK as early HPT experiment in my 2 week wait. I've done some online research that doesn't really give a definite answer as to whether or not OPK's can be used at HPT's with all women.
So far I'm not sure what to think. On the day that I got a peak fertility reading I used an OPK to see what a positive OPK result line would look like. It was very dark, as dark as the testing line. The next day I still had a peak reading on my monitor, which is common, but the OPK was considerably lighter than the previous day. At 3 days past ovulation the test line on the OPK was very light. Yesterday, at 4 days past ovulation, the test line was suddenly much darker and very noticeable. I began to wonder if this was early pregnancy being detected, BUT today I took another OPK and there was no line at all. If a line comes back in the next 9 days I will be very puzzled. I can't wait to see what shows up tomorrow.