CD19 is not actually considered "late" ovulation. I believe most doctors classify late as being after CD22 or CD24. It might be late for you, but it's actually not that late in the game. Also, you are assuming that you are going to have a 28 or 30 day cycle this time around because that has been your experience in the past; however, late OV will simply translate into a longer cycle (most women begin menstruation roughly 14 days after OV- give or take a few days. So if you do have a classic Luteal Phase of 14 days- and perhaps you don't- your period should start around CD36).
The reasons for late OV vary, and it's nearly impossible to find an answer after only one cycle.
I personally OV'd this past cycle on CD26, and conceived. So it's possible to conceive even if you do OV late.
PS: Do you chart your Basal Body Temperature? I ask because sometimes ovulation tests are wrong, and charting is the only way to confirm that you have in fact ovulated. Best of luck!