Morning all.
We've been ttc our second for 4 months, after a mc last Sept. at 12weeks. My cycles have got much longer since the mc, and I suspected we might have been dtd at the wrong time,( or rather I hoped that was the case, rather than anything going wrong in there, iyswim!) I'm 41, and wanted to make sure I was ovulating properly too. I even had a progesterone day 21 ( which for me was actually day 27/28) test done at Drs to start to cover all necessary bases!
I bought my cbfm just over a month ago. It actually arrived on the evening of day 5, so I lied to it and told it that day 6 was day 5! (Naughty, but otherwise we wouldn't have been able to use it this month! Call me a rebel!)
It wanted a stick every day from its day 6 to day 26 (my cycle averages 34-36). I didn't get any highs til day 17, then all highs til day 25. I had two lows before it stopped asking. We timed dtd around the middle if the highs and using my cm as a sign too, except we did it for longer after the cm, than we usually would, as the cbfm kept saying high.
Anyhoo, I got my BFP two days ago! 
Am digesting the idea with trepidation, trying to remain hopeful but realistic and not too excited about the chances if a successful pregnancy - the consultant I saw after my mc said I have a 50% chance due to my advanced age, but I also have a v large fibroid in there, that might or might not have contributed to us losing our last bubs. So, for now, I am pregnant.
Hope I've not hijacked the thread, but I wanted to share how it worked for me. I'm holding in to my monitor until we have our bubs in our arms, but then I'll happily flog it/pass it on!
I had so few symptoms that I ordered some more sticks on eBay which arrived the day I got my BFP, so they'll be flogged/passed on soon I reckon!
Good luck to everyone. Xx