One of the best purchases I made a few months ago was my ClearBlue Easy Fertility Monitor (CBFM). After months of spending $35 per month on a box of disposable ovulation sticks/OPKs (I literally think I went through 8 boxes), and after my miscarriage, it was game on. I wanted the best. And for $199, my CBFM and a box of 30 test sticks was mine.
CBFM has a test window of 6 hours. Selecting and setting my optimal test time at 6:30 a.m. means I can take the test anytime between 3:30 a.m. and 9:30 a.m. My body automatically wakes up at 6:30 or so - no matter the day of the week.
Last month was my first month using it. I was also on Clomid, which can mean that you can get more "high" fertility days than someone not taking Clomid. I learned something very interesting with this monitor that I was never able to detect through BBT or my disposable OPKs. I ovultate very late - my "peak" fertility status (meaning I am at my most fertile point of the month) showed up on Day 19 and 20. I wasn pretty thankful that I even saw a "peak" - this meant that the monitor detected a surge and that I likely ovulated (later confirmed on Day 21 by a blood test at my Doctor). The only bummer is that the monitor asked me to test 20 times... usually, during a cycle, the CBFM will only request 10 tests. Last month, CBFM prompted me to start testing on Day 6. So, by Day 16 (10 tests later), I had seen "high" fertility, but not "peak".
I am on Day 7 of this cycle, and the CBFM hasn't requested me to start testing yet, so it must be using my pattern of history to project when I will need to start testing (later in my cycle this time).
It's a pretty slick tool. I'll admit, I almost jump out of bed around testing time to turn it on and see what it displays for the day. When I got a "peak" last month, I about tackled Mr. D in bed with excitement. :)
Here's to "peak" fertility days!