Should I see a doctor?

I'm 30 years old and seriously TTC for the past 6 months. I honestly was only on birth control for a year when I was 18. The past 2 years my husband and weren't trying to get pregnant but we weren't trying not to either. Should I be concerned and see a doctor? My husband has children from former relationships so I know he is able to have children so now I'm wondering if there is an issue with my fertility.