yes me too. Cannot travel in aircraft or boat either as specialist care isn't there. I can use a medical evacuation flight but can't afford this so my next specialist appointment is April.
get another 30 days extension. Use a border bounce company if you can for a 3rd VISA EXEMPT. Definitely don't go though an airport as immi have been red hot stopping people like you. Time to consider a Non O.
no you didn't share your condition with me and tests are fine as you said. I have NSIP and suffered a pulmonary embolism early October so I understand. I have an acute pulmonary embolism still and I'm under a lung specialist. Oh the operating surgeon said 3 more minutes he couldn't save me.
You said your tests were fine and the Doctor hasn't given you a medical certificate. So in summary this Doctor won't sign off on an unfit to travel medial certificate so GET A SECOND OPINION.
firstly you don't have a visa as you enter WITHOUT a Visa. 60 days no visa.
2nd you can get a 30 day extension-ask your local immigration office. Why won't your Doctor certify your unfit to travel so you can apply for a medical extension?
Seek another Doctors opinion and take all tests with you. The area Ao nang doesn't have significant pm2.5 levels.