Curing infertility naturally

I am a 27-year-old woman who spent 5 years on birth control because I wasn't "ready" to have children, and had very sporadic periods, making it hard to track fertility.

My husband and I are currently trying to get pregnant.

I've been off of BC for 5 months, and have not had a period. I know that BC is false hormones and stuff that takes a while to get out of your system, but before I ever went on BC, I had VERY sporadic periods (I once went over 2 years without getting one).

My mother had a very similar pattern before she had 3 children.

She used Clomid to get pregnant with my older sister.

I am taking a mix of Vitex and Black cohosh and a couple other things that are shown to improve natural hormone function in women.

However, my question is if anyone knows an actual cause for things that medical practitioners call "unexplained infertility" or even PCOS, because it is my hunch that that is what I will be told after I wait my 1-year requirement to be considered "infertile."

I want to have a natural birth and would much rather change my diet/lifestyle than take Clomid or something else.

I am of normal weight, try to eat a balanced diet, take vitamins and exercise, and have not had any significant medical problems in my life.

I'm one of the healthiest people I know. Except for the fact that I never get a period.