Symptoms of a Cold
The common cold is caused by a virus that can cause a variety of symptoms, including sneezing, coughing, a sore throat, a runny or stuffy nose, and a headache. A cold typically lasts for up to two weeks.
Possible Causes of a Cold Getting Worse After 3 Days
There are a few possible reasons why a cold might get worse after three days. One possibility is that the virus is continuing to spread and is causing more severe symptoms. Another possibility is that you may have been exposed to another virus or bacteria that is making your cold worse. Finally, it's possible that you're not getting enough rest or nutrition, which can make your symptoms worse.
Treatment for a Cold
If you have a cold, the best thing you can do is get plenty of rest, drink plenty of fluids, and take over-the-counter medications to help relieve your symptoms. Over-the-counter medications can help reduce inflammation and congestion, as well as reduce fever. If your symptoms are severe or don't improve after a few days, you should see a doctor.