The best thing you can do is knock 'my cycles have always been', and 'I always .... before O/before AF' out of your vocabulary. What's happened in your past cycles has ZERO to do with current and future cycles. And yes, LP stays the same, roughly, but you don't know exactly when you ovulated last month, so not sure how much stock I would put in the 9 days thing. Could be correct, but you weren't temping so hard to know.
Keep sexin and see where it goes ;)