Help: sudden bumps on skin

Patient: Hello,Since last night my face has erupted with what i think is looks like acne.It could be infection, allergy.very small to small bumpsno colorationno pain or itchingTuesday night: Started with small group below my lips on the chin.Wednesday evening : right cheek covered with these bumps.Wednesday night{now} : started erupting in the left cheek: only a change in diet: rice/lentils,pepper,bread,chocolate spread.tried applying ice.had 1 allegra 120Thanks in advance,Nia

Symptoms: Small bumps on face