Hi Megan
you've come to the right place at FF. I only joined myself recently and was already quite a way through treatment cycle, but have found it brilliant as a place for support and a generally warm feeling. Wish I'd found it at the stage you're at.
I have unexplained infertility, and like you thought it must be something to do with my age, if nothing else (I'm 37, started TTC in earnest at 34). Don't know if it helps to know much about what happened to me, as everyone's pretty different, particularly when it's unexplained!!
Basically what you can expect is lots of investigations, blood tests galore to check your hormone levels and then they will explain your likely route for treatment. It can be so different depending on lots of factors, so stay on FF, join a board that matches your treatment, ask the nurses and join a gang of cycle buddies when you know what treatment you're getting.
The one thing I have been consistently told by all the ACU staff I have seen at each stage is that every treatment cycle is research in itself about you and what might be causing your infertility. I'm on the 2ww for my first IVF cycle and I've already found out that my problem is that my eggs don't fertilise even though I have no trouble producing any and the sperm were all very keen on the day, they just couldn't get their little heads through!!!

. No wonder I wasn't conceiving! Be prepared for alot of trial and error, keep your DP/DH close to you and try to laugh through it.
Best of luck, and hope it comes good for you.
Gotta go watch Ahmed get chucked out of BB house now - bye!
Claire