Glad to hear it mate

Rigorous exercise helps no end. Not that I should know mind being 17 odd stone, haha. Good luck with it. It sounds like your GP maybe didn't give the unit a great referral. I don't know though. Just try and get a good diagnosis, and if it is hindering your day to day life there's no reason why they shouldn't accept a referral, at least without a face to face meeting. Persistence in going back to the doctor is really tough though and you shouldn't be in the position to beg for that diagnosis. Poor that, I'm very glad you've at least got an alternative.
As you say, you're coping and that's key, along with recognising, or having someone else to recognise, the symptoms. More power to you on the meds. They're not all the same, but if you can get by without them, then that's brill. Take care!