When I was younger I used to have strep throat over and over and over again. Now at 16 I have been diagnosed with asthma and allergies. My nose is constantly stuffed and I cough up mucus about once every few hours. I feel like my throat is clogged with mucus and sometimes it makes things hard to breathe, or makes me feel sick. My parents say that it's just my allergies. Is this why I am coughing up so much mucus?