Getting Pregnant at 42

My husband and I are not trying to get pregnant but we know it can happen. I am not on Birth control and we use condoms and are very careful but we still worry often that it can happen.

I don’t have regular periods. They are very light and can come anywhere between 22-30 days.

I was just wondering if I should be taking extra precautions or at my age would it better harder to get pregnant?