I know you are charting but maybe give it a break for a while and stop watching your CM as sometimes doing all that and knowing you have to DTD does take the fun out of things. I've only ever used OPK's and that was with my last pregnancy only.
I used to start DTD when i got to a certain CD and then stop once i was a week close to AF. We would do it every other day if we could but it didn't always work that way.
Also we would sometimes have a small glass of wine to help relax us as DTD while ttc is not always fun and sometimes very stressful even more so when your not 100% in the mood so i found the wine helped a little.

The only real fun part was DH watching me with my legs in the air after. Yes i am one of those ppl that used to do that.

Good luck this month.