I am experiencing fatigue, cough (quality: barky, hoarse, or hacking sounds, with phelgm or mucus, chronic cough) ( worse at night) , ... tried robitussin, but it only made it worse. been going for a week now. started as as a sore throat?

Dr. can check throat: Throat symptoms can be from a strep throat infection (antibiotics are needed), a cold or other virus (antibiotics usually not used), allergies or irritants, sinusitis, stomach reflux when asleep, etc... Usually, one sees the doctor if the throat is bothersome, recurrent, or doesn't go away quickly (mainly to check for strep and review details to see if laryngitis, bronchitis, etc., are present).