Talk to General Physician on Flu, Congestion, Headache And Temp

i was suffering with throat pain so I took an erythromycin tablet two times and i felt some relief but the next day i felt temp and I was concerned with clinix doctor he suggested me cough syrup and said that leave the antibiotics and provide me anti allergy to provide congestion relief and headache relief pain. i am not feeling well yet now. what should i do. now, i felt too much congestion in my chest and somehow pain in my throat and headache and heavy head and felt temp as well with body pain.