Clear blue fertility monitor help

[Sef89]

On cd13 and still getting lows anyone rlse had this then got highs and peaks, my 1st 2 cycles using this i got high chart day 8/9 then peak on cd13/14, just it's got me worried so paid for private scan yesterday and i have a leading follicle measuring 11.4, so I'm just so unsure what to expect..... Thanks

I had this the first month of using the monitor and then never again. I have read in a few places that it takes time to get to know your cycles. I did the cheapies alongside for the first two months to make sure I'd covered all bases. It's not unusual to get low fertility for 10+ days!