Hi Sheree,
This is Annie from BCNA. I'm really sorry to hear that you're experiencing a rough time while on holiday. Like you mentioned, I think it's a really good idea to see a local GP if you can manage it as they may be able to get the coughing under control. I wonder if you could also email your Oncologist at home to let them know about your situation? They may be able to provide some advice through email. If you would like, I can contact them for you (feel free to email me at policy@bcna.org.au).
All the best Sheree
~ Annie