About 1.5 weeks ago I had what felt like a mild cold/sinus/allergy of some sort, stuffy nose, headache, and mild cough. After a few days it cleared up. A day or so after it cleared up one side of my throat seems a little sore and swollen. It's been like this for almost a week. Is this normal? What could it be? Not sure at what point I should go I the dr?