Well I think its my heart it could possibly be my lungs. It hurts when I breathe or lay down or when I do the tiniest physical things. I m only 15. Oh and I have asthma too. by the way I m a vegetarian.
Sounds like bronchial spasm in the lungs.  Lungs can not open and deliver oxygen to the blood, so you are tired, and your heart hurts a little too.  I would think that is your asthma acting up.  You can ask a pharmacist for something over the counter, but you should see your doctor. Asthma can be aggravated by pollen and dust outside, or dust inside, too.  A thorougChatDoctorplete cleaning, vacuuming, dusting of your house or apartment is a very good idea.  Also, clean air filters for the A/C.  Its possible your carpet pad is severely decorated and dusty, if it is very old. You can also run a good HEPA air filter in the house to pull allergens out of the air.