Antibiotic allergic reaction/Candida overgrowth

Patient: Can I develop candida overgrowth from one does of zithromax? (treating chlamidya) healthy 26 year old male no prior medical history. Any answer would be greatly appreciated. Also could an allergic reaction from the antibiotic such as difficulty breathing last for over 4 months?

Symptoms: Difficulty breathing (inhaling)

Doctor: