I have sore throat on one side and earpain when swallowingfor 4 days..also nausea and vomiting white mucus like stuff today.

Viral illness: It sounds as if you're coming down with a viral illness. The best things you can do is treat your symptoms with ibuprofen or acetaminophen for pain. The symptoms may last between 10 to 14 days

This is most likely: a viral illness, but you should be checked by your doctor, if you do not improve in a few more days, or if you have a fever. You could have strep throat or an ear infection, which the doctor can diagnose and treat if necessary.