CB opk frustration! Suggestions?

[StephyB]

This is my first month using CB opk's....I used to temp but haven't gotten back into it yet.

We BD'd Sunday afernoon
Monday night as I saw ewcm
And Tuesday night as I saw more ewcm...
All those days had negative opk's

Finally this morning I got a + opk (smiley)
And hubby says he is drained out lol

Have we BD'd enough?

I normally always get my AF 2 weeks after I see ewcm....