Gyno or Fertility doctor?

Hi! So last night, we had a discussion and my SO felt maybe we needed help TTC. December will be a year trying and nothing yet. I’m 31 and he’s 35. I have done Digital OPKs which have given me peak readings but he may be the issue :( he’s on anti depressants and we just haven’t been successful. We fear he may have sperm issues and he doesn’t feel confident we can do this naturally. I’ve read that after a year, to seek intervention.

My question is do I make an appointment with my ob/gyn or do I go to a fertility specialist? I will bring him to this appointment.

Any recommendations for a fertility doctor in NJ/NY if that’s the route I’m supposed to go?

Thank you! We want a 2020 baby!