I Have Been Experiencing Difficulty And Labored Breathing So Badly

I have been experiencing difficulty and labored breathing so badly I can hardly work or do anything. I keep making myself yawn or I am afraid I might pass out. my vitals are normal and my lungs and heart sound "healthy" ive been to two drs and the last one was actually quite rude. im so frustrated, I need help. I also have regular migraines. have had decreased menstruation, and occasionaly get really bad stomach cramps (not menstrual), im a smoker, on birthcontrol, and a recovering drug addict who currently takes suboxone. I haven't traveled out of the country but Im a housekeeper at a hotel where people from all over the world have stayed. please give me some advice. 26 yrs old, white, female- by the way

I didn't know I was supposed to pay, guess im out of luck