Your plan sounds sensible - stick with what works. I am also worried about long term use of medicines etc but give yourself more time and like you say in the long run get advice.
Let me know how the physio goes and also the other place if you have to go there - I'd be interested in what they say/do.
I think I'm allergic to rectogesic - it makes me so sore. I tried one small amount last week and couldn't sleep for pain. So I'm not using it at least until I've seen the specialist.