I charted for several months utilizing both temps and CM to prepare for TTC. However, I stopped temping about 3 months ago when my doctor advised me that it would be best to no longer take my prescription of Ambien while TTC. Needless to say, my insomnia has returned in full force since stopping the meds and it has prevented me from getting accurate temps.
Since I can't really temp anymore and we were starting to try with this cycle, I decided to use the ClearBlue Easy OPK instead. This morning I got my first smiley face on the digital read-out. Is anyone familiar with this test and how accurate it is? I always had faith in my temps to tell me that I ovulated - but this, I'm not so sure.
Re: It's GO time - but first a question......
Chemical Pregnancy
I was using cheapies from Walgreens and FR OPKs at first. I was getting 5 days of +s and Oing in the middle.
When I switched to CBE digis, it cut down to 1 and 2 days respectively. The first month using them I got only 1 day of +, I O'd the next day. Last month I got 2 days of +s, and O'd the day after my second one. So basically I O'd the first day of - OPK after the +s. (Check my chart to better understand.)
TTC #1 since March 2011
1 medicated TI cycle & 4 clomid IUIs = all BFNs
DS1 born 2/14
TTC #2 since December 2014
May 2015 unassisted BFP ended in m/c at 7wks
April 2016 FET #1 = BFN
June 2016 FET #2 = c/p
August 2016 FET #3 = BFP!
DS2 born 4/17
Yeah, I figured that ANYTHING was better than nothing....and at least I know that I have the ability to ovulate pretty regularly based on past cycles. But BOOOO for not being able to temp!!! I mean, I still tried for a while but after a month of wacky, all over the place, temps I just gave up, lol.
I know what you mean
I think in your case it would be very frustrating to try and temp, especially if you are getting such inaccurate results anyway. Chart your CM too, that should help a little bit along with OPKs! 
Chemical Pregnancy
I used the Clear Blue digi OPK's my first time around TTC. I had been charting for 16 or 17 months prior so when I started using the OPK's I already had a general idea of when I was O'ing. The month I got pregnant I ditched my thermometer and used just the OPK's. Once I got the smiley face we had sex everyday until it went away. We also had sex 1 day prior to the + opk.
I don't know if this answers your question or not, just my two cents!