I'm a bit confused about your clinic visit.
I realise you had a bad trial experience etc but can't you attend the clinic with the assumption that they are able to help you in some way, rather than get you into another trial?
Sorry, i'm probably missing the point and things have gone pear shaped for you in the past but to me, a clinic visit is for me, for my needs, for my questions, to help me.
I use whomever I can to get what I need. They are there for my use. Not the other way round.

Are you wanting 'convential' treatments? Can't you get any?