Hi Blayz, welcome to bellybelly! Best of luck for your upcoming appointment. Your doctor may find it very useful to look at your charts, so make sure you bring them along too.
I've got a MB which a friend lent me, saved me from buying it. I'm still less confident in that, than I am in the OPKs... but this month I'm pulling out all tricks and using both together (along with temping) because I'm starting to get a little impatient. I've heard that not everyone gets effective ferning from MBs.. so it would be good if you could try it somehow first. But I agree they're a lot more user-friendly than OPKs (and easier to discretely do at work!).

Best wishes to you, and hope your get a BFP very soon. Sometimes even just making an appt with a specialist can bring on a BFP I heard, so I'm sending out hopes that you might cancel that appointment!