According to Fox5 San Diego, here's how you can tell if you have a cold, the flu, or COVID:
Symptoms of a common cold include: stuffy nose, and a sore throat.
Symptoms of the flu include: A fever, cough, tiredness, stuffy nose and muscle aches.
Symptoms of COVID include: All of the above. It is also possible to get COVID and the flu at the same time.
Find your local testing center here. Find out where to get vaccinated against COVID-19 here.