Where do I start?

Ca

I don't think I am ovulating. My cycles are all over 35 days and inconsistent. I went to the obgyn and she found no reason for it ( normal hormone levels, no signs of PCOS) which must mean I just don't ovulate on my own and if I do it's not regular. My husband and I would like to start a family in the next year, but with this new information I am already pretty sad because I am assuming it will probably be difficult to get pregnant.

Where should I start? How do I start tracking? What do you all do?