Last month I tried the test strips for ovulation. The first day that I tried it there was no line. The second day I guess I didn't wait long enough b/c I thought it was negative until I saw it in the garbage a few hours later and it had a postive line. I used them for the next two days and got postive results. I thought if you got a positive it meant that you would ovulate in the next 24 hours. How could it be positive for three days straight? Can anyone help me with this?