About three weeks ago, I thought I caught a cold, but now I am not sure. I have been dealing with congestion and using diabetic tussin cough syrup (I am diabetic-type 2) Last week realizing the congestion was not going away, I began to take mucinex. I have alsmost completed the package but I still have congestion, have a lot of phlegm, sometimes difficulty swallowing. Coughing a lot. Tenty years ago I suffered congestive heart failure, but this doesn t feel like the same thing--I can lay down and breath and there is no swelling.