I need advice. Fertility specialist appt

Ashleigh • Married to my best friend. We have a 6 year old son, 1 miscarriage and currently ttc our rainbow baby 🌈👶🏻
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My fiancé and I have been trying to conceive for 15 months. During those 15 months, we started seeing my regular obgyn about 8 months ago as I had been tracking everything and never ovulating. Never had a rise in my bbt, and never had a positive opk. I have gone through three cycles of clomid (50mg, 100mg, 150mg). Last month, I had a transvaginal ultrasound and blood work done which ruled out that I do indeed have PCOS. I immediately started taking Metformin in the beginning of May (during my third cycle of clomid). The first two cycles of clomid I did not ovulate, but the last cycle on clomid along with the Metformin, I did ovulate. For the first time in years, my cycle was 32 days. Usually they lasted about 50-70 ish days. I'm currently on cd 5. And I am not taking clomid this cycle as I'm waiting for my appointment with the fertility specialist this Thursday. Is there anything I should take with me? Blood work results, ultrasounds, etc? What should I expect for the first appointment? Also, do any of you other ladies take anything else, vitamins etc?