Fertility specialists

Jennifer • TTC for 3 years (1 blocked tube), 2 MC
I was just wondering what the process of seeking a fertility specialist for tricare. I just started cycle 12 which my PCM told me after a year of TTC we could start looking at options, but we didn't go into detail since I wasn't quite at that point during my last visit. Will my PCM start the process of testing or will he automatically refer me to a specialist? Also, what tests do they start with (I'm assuming less invasive first but I am unfamiliar with the entire process).