I use the Clearblue Advanced ovulation tests.. last month I started my blinking smiley (high LH levels) on 8/1 and didn’t get my static smiley (peak) until 8/13.. this month I started my blinking smiley on 9/11.. can anyone give me any information?? How often should we have sex while the LH levels are high? Is it normal to have high levels for 13 days? And anymore advice would be very much appreciated!! We have been TTC for almost two years, but I just started pretty much obsessing last month and keeping up with everything..