I am on Augmentin for chest congestion 875 twice a day. Been on it 3 days. Felt better yesterday. Today, congestion alot better (I was coughing up green stuff) but today am wiped out. Can hardly move. This Morning took sinus decongestant also because of sinus headache. Could the combination make me feel worse? Cough is now dry - whole body feels whipped. Called Dr. office and told to cut dosage in half a couple of days. Opinion??