Hi Cupcakes
Well I wish I was in the TWW but instead am going insane of a different variety!!! Bearing in mind I usually have a 27 day cycle...
Days 6 - 15 Low
16, 17, 18 High
19, 20 (today) Peak

I was getting so worried with all the lows that I also started charting and have had a rise today so the chart and the CBFM are agreeing - plus CM 
So on the one hand it explains why after 5 cycles no BFP as I was estimating about day 14/15 for ovulation and DH was always worried about DTD after this in case we had been successful
so usually stopped DTD about day 16 in previous cycles.
BUT it means that I almost certainly have a problem with a minuscule luteal phase :( as I usually spot 2 days before AF which would be 5DPO this cycle!!
Am trying to retain some positivity but not doing very well so far!!