At home methods to ID potential probs w ttc before 1yr?

AF came again today 😥 Haven't been trying for a year yet so I don't think I can do much to identify if there's reasons why or it's just still not our month.

I use mira to figure out when is best to try, and track bbt. What else can I be doing to improve my chances or figure out if I have underlying issues? I want to feel proactive and in control even if I can't get a professional opinion yet.

Also interested in any supplements or things you have found that improve fertility