I’m 19 and had a bad case of bronchitis for about 2 months 4 months ago but still to this day everytime time i wake up in the morning i have trouble breathing and i have to spit up this super dark and thick mucus and have to blow my nose often throughout the day too, it’s yellow. It doesn’t seem to be coming from my lungs but my chest does hurt. I feel like i haven’t been able to fully go back to how i was before i got bronchitis and i’m always super tired no matter how much i sleep... i have no idea what this could be.