Af is 9 day late.

Af is nine days late. I keep getting BFNs. A few days ago I had lower back pain and some cramping, but nothing now. I’m wondering if I just skipped a period this month? Do you think I should just start tracking my ovulation again? Long story short, I got married back in July 2017 and totally skipped it that month ( thinking stress). Other than July, Af comes every month. I haven’t been stressed this month so I don’t know what’s going on.