I need to talk about my deep cough and the doctor I went said all it was allergies?

Antibiotic overuse. It all depends on the duration of your cough. Is there green sputum coming out? Do you have fever? Do you smoke? Have copd? Chronic cough can be cause by non-infections causes such as reflux (gerd), a variant of asthma, etc. The clinical exam should be important...Are you wheezing? Are you short of breath? Your doc may be right. Postnasal drip is a major contributor of chronic cough. Ask him.