I'm trying to figure out if I should be worried about the side effects I'm experiencing. I started using seriflo250 as my pulmonologist prescribed due to some bronchi problems. I had a dry cough before, but now Im coughing more with sputum, and I suddenly got a runny nose, mild headache, and a fever around 100F. I used to smoke for about three years too. Is this normal, or is this something I should be concerned about?