Woke up with severe sore throat. Walk-in clinic did rapid strep test which was negative. Next day sneezing, coughing, difficulty swallowing. Assumed it was common cold and it lasted three weeks. Still sore throat, difficulty swallowing, felt sick. Took Augmentin one week and felt better about one week. Feeling sick again, sore throat, difficulty swallowing. Also feel claustrophobic and hard to breathe lying down. Have appointment with ENT in one week. What could this be?