Thanks for your replies ladies. You're right, no best time.
Checked this morning and not much stretchy stuff.
Just checked when I last went to the loo today and guess what - I got the stretchy stuff, yep EWCM (haven't DTD for a while so no confusion), and it is only CD12. If I kept to my usual pattern of only checking in the morning I would have missed it.
Looks like I am on track for a 28 day cycle. That acupucture sure seems like it is doing the trick (fingers crossed!!!).