Hi I m 36, have smoke off and on socially for 15 years. Lately when I breath in my chest hurts in a specific area, taking deep breaths as I feel like I m our od breath. Mind you, I just had twins 9 months ago. I did not smoke during my pregnancy. I am also 100 lbs overweight from the pregnancy and hypothyroidism. I did jog last night and was extremely winded. Could this be asthma, copd, emphysema?