I have been a diagnosed asthmatic since 5 years old on medication since then. I am now 65. Asthma worse over past 4 months and chest xray indicated slightly enlarged heart. Doctor did not discuss despite my telling him I am due to fly to the other side of the world involving 3 lengthy plane trips. I am worried as breathing not responding to usual inhalers. Should I get another doctor. Travel in 2 weeks? Thankyou.