I HAD A CHEST COLD RIGHT BEFORE XMAS AND LOST

I HAD A CHEST COLD RIGHT BEFORE XMAS AND LOST MY VOICE WAS PUT ON AMOXICILLIN FOR 10 DAYS ALONG WITH CHERATUSSIN AND FELT BETTER BU MY COUGH IS STILL HERE AND I FEEL LIKE TIGHT AND WHEN I COUGH SOMETIMES IT HAS A CRACKLE SOUND LIKE I NEED TO GET RID OF FLEM SO I CALLED MY DOC BUT NOT THERE ONE ON DUTY SAID TO TAKE MUCINEX, SEEMS MAKE ME FEEL DIFFERENT FEELS LIKE IT MIGHT BE HELPING WHEN I COUGH I FEEL LIKE A BURNING CONGESTED FEELING