​This was our 7th month TTC.  I used OPKs the first 6 months but honestly they stressed me out too much.  I could never tell if it was really a positive or not, and then I'd stress about whether or not we had enough sex.  So this month we DTD cd 10-18 every night with the FULL dose of preseed.  In previous months I had only used a little.  I also told my husband my plans at the beginning of my cycle.  That also helped me relax so there was no stress about initiating sex.