how my cycle pans out this month. My cycles vary from typicall 25 - 28 days and usuallly O around day 14 or 15 - 17 giving me on average a 10 day LP. I am really hoping I don't end up with a 10 day LP otherwise AF will be arriving on CD22

That's way to early. I'm hoping to see a long LP. I don't think I have ever seen my DPO say 12! So I'm hoping for 1 of 2 things...a BFP or long LP!