I got pregnant with DS1 at 29 after the first month of trying. I was 31 when I got pregnant with my DD after 2 month of TTC. It took almost 10 years to conceive my DS2. I was 42 when he was born.
DS2 was conceived naturally (without meds). We did do about 3-4 years of fertility "stuff" - Clomid, IUI and I did get pregnant once but miscarried. We quit all fertility treatment about 5 years ago. We saw several specialist who could not find any fertility issues with either myself or DH.
I would love to have one more baby in the next year or so.