Hello everyone, I am new to the forum and TTC. I have been monitoring my ovulation with OPKS (no temping) for the past 3 months. I have a 31 day cycle and use the clearblue digital 2 day opk with smiley face. I tested on Friday morning (fmu) and got a smiley face (this was cycle day 13). I tested later that day and had the empty circle. We had sex 4 times last week but I didn't think that I would ovulate until yesterday. So..over the weekend I had lots of cramping, bloating and CM. For whatever reason I tested again this morning (4 days later) and got another smiley face?? I know that the LH surge is 24 hours. Has this happened to anyone else? Thank you!