Lookingn for a cycle buddy!

I am finishing my last birth control pack tomorrow. This means that AF should come late Friday or early Saturday. I am 29 and we are going to start TTC#1 next week. I have no idea how my periods will be moving forward, but when I stopped birth control some years ago I got regular 28 day periods right away. I am going to be using OPKs, bbt and CM to be as precise as possible!