I didn’t have any side effects until 3 days after getting it. Use these strategies to cope with any discomfort. Key points: Swollen or painful lymph nodes are the most commonly reported adverse event following a COVID booster. Pain headache or muscle ache. 8 Things That Make TMJ Worse (What You Shouldn't Do) Muscle aches. Some patients worry that receiving an injection in this area could permanently injure their shoulder. Covid-19: Jaw pain is an unexpected side-effect of mask wearing Jaw pain. feeling tired. Oral Side Effects of COVID-19 Vaccine - Full Text View COVID vaccine. Are my side effects normal Here's a list of the side effects to the COVID-19 vaccine, plus information on how experts track side effects and what reports of serious side effects mean. Avoid Eating Hard Foods. we'v’ known since the covid-19 vaccineoll rut o began that one possible side effect is enlarged lymph nodes. COVID possible. The surprising Omicron symptom that’s leaving 1 in 5 in agony COVID arm, which should be more accurately referred to as "COVID vaccine arm" per Dr. Little, is a delayed hypersensitivity reaction to a component of the COVID vaccine.