I have got really bad mountain (altitude) sickness before five days. They put me on oxygen and gave me a pill at the airport. I traveled back to sea level and seemed to be recovering. I traveled in a car the last couple of days, and I am now with very little medical support. I have weird chest and stomach pains that were similar to when I got altitude sickness. I do not want to eat. I did have some chicken, rice and water an hour ago to get some energy. I think I got the second stage HACE or HAPE. My face is not swollen. I am worried about my chest and stomach pains. What to do?