First appt with fertility specialist

We go next week for our first appointment with a fertility specialist. We have been TTC for almost 2 years now with no luck. I feel like we've tried everything under the sun (ovulation tests, bbt, vitamins, preseed blah blah blah). I'm scared / nervous / excited i guess but dont know what we should expect and what questions i should have prepared. Id also love to find some women who are going / have gone through this before who know the ropes! :) any tips or encouragment is needed ! I appreciate it !