Newbie at TTC

Hi ladies! My husband and I have been actively TTC for about 4 months now. However, I do have very long cycles. they've progressively gotten shorter over the past 6 months after I did a few rounds of provera and now I'm getting them on my one once ever y 35-45 days. I've been trying to track by bbt however I'm lost with the cm and cp checking. Any helpful tips are most welcomed :) best of luck to all who are TTC!!!