When to push to see Fertility Spec

When is it time to ask to see a specialist? DH and I have been trying since January. The GYN said we have to wait until one year to see a specialist. Frankly I am tired of waiting and my cycles are not regular. I am trying to lose weight hoping that will help. If my cycle is late this month but a BFN I think I may push to see a specialist. No use in wasting my time if i am not regular. Thoughts?