You know, I am wondering this myself. My feeling is that it does. My cycles have been
37, 30, 26, 32, 28, 27 . I am starting to think that I am not actually o'ing in those short cycles. I'm not temping though, so it's all speculation. It only took us 3 shots last time and so far it has been 7.
I think the committment to bf takes special patience with and understanding of your body. But, I don't have the definitive answer for you. A lot of us are finding that it is taking longer than expected
There is every chance your time will come soon. Good luck!
Mama to 13, and 10 and 4.