Suggest you see your doctor and have a chest x-ray done.

This could be from medication or something anatomic. Should talk to your physician

Thank you for the question. A dry cough indicates irritation of the trachea, the bronchi that branch into the lungs from the trachea, the even smaller branches, or the tissue between the air pockets. There are a myriad of causes, from sinus drainage into the lungs to chemical irritation from reflux of stomach contents, to actual infections of those tissues. You should see your doctor to distinguish these causes, which can be done with exam, x-rays and scans, and blood work, if no coughed up sputum is available. They all have different treatments.

You should see a doctor. While could a reaction to something causing an allergic reaction, it could be due a medicine, a lesion in your bronchial tree, or an infection.
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G. Dickinson