Covid Breakthrough Symptoms Diarrhea. A stomachache can also be a sign of a breakthrough covid infection: Among the specific gi symptoms, diarrhea is the most common.
According to the centers for disease control and prevention (cdc), commonly reported long covid symptoms include prolonged shortness of breath, fatigue, cough, pain in the chest, stomach, joints, and muscles, headache, heart palpitations, diarrhea, sleep problems, fever, rash, changes in smell or taste, and newfound difficulty concentrating. Among the specific gi symptoms, diarrhea is the most common. Nasal congestion, runny nose and sore.