Feeling relieved

I came off BC in November after 9 years. Ever since, my period has been pretty perfect. 28 day cycles pretty much, only a day or two early or late. I didn't want AF to come obviously but she did today when she was supposed to. In a way I'm relieved to know that my body has regulated very quickly and we don't have to play the guessing game. How long did it take everyone to regulate and then get your BFPs after BC?