Obgyn

My husband and I have been trying to conceive for 7 months. Confession: I have not seen a gynecologist since I had my 6 week postpartum check up for my four year old son. The doctor moved and I haven't made any real effort to find another one. But I am starting to get concerned about fertility and whatever underlying issues. Is this something I should talk to my primary about or do I really need an obgyn?