Anyone else's fertile window start tomorrow?

Laura ā€¢ Mommy to one angel, Lexie Grace. 10/21/16. šŸ‘¼ Rainbow šŸŒˆ baby šŸ‘¶ due August 2018!!
My cycles are typically 31 days long...I am supposed to start my "fertile" window tomorrow. Hubby and did the deed tonight and there will be loooottts of sex the next few days :) Maybe this will be our month. Anyone else's window start tomorrow?? Let's get ready for this TWW ladies!!