I'm sorry you missed it! I can't answer your question other than to say it'll happen when it happens. Sometimes it happens right away, and other times it takes a while. You just have to stay hopeful and time your bd'ing.
It's always weird to find you have a "perfect" chart, and timed bd'ing just right and still nothing, but other moms have el-whacko charts and still get their positives. So, I think it's up to God to bless us in his time, not ours.