FD doesn’t want to test, just wants to go by symptoms

So I finally had my consult with a FM doctor today and he assumed due to my symptoms (heavy periods, insomnia, pms/pmdd, acne, hirsutism, androgenic alopecia) that I have estrogen dominance even though DIM didn’t help me for the 3 cycles I took it (it only helped breast pain) and my hirsutism actually worsened while I was on it. He suggested CDG as an option instead but shouldn’t there be testing to confirm what’s going on? I suspect I have possible both low estrogen and progesterone but he said if I had low estrogen I’d have a luteal phase defect.

Any feedback would be great. He does offer testing such as cycle mapping etc so I’m…befuddled.