Possible Nitrofurantoin Allergy

Patient: I recently started taking nitrofurantoin for a UTI and now I am itchy all over, especially on my face. My throat feels swollen as well. I can’t find any rashes on my body. Is this an allergic reaction? Should I continue with the drug?

Symptoms: Itchiness all over body, especially on face
itchy eyes
swollen throat, some difficulty swallowing
some dizziness