Sore throat. Point, i cough only whe!

About 3 weeks ago I went on a trip to Florida to visit family. About four days into my two week trip, I started getting symptoms of a common cold. Runny nose, coughing here and there, as well as a sore throat. Symptoms continued and got worse throughout my stay. Very bad cough, itchy throat, and sore throat to the point that it was hard to swallow my food or even swallow in general. Coming down to the last two days of the trip, cough was not as bad and sore throat began to feel better. I returned home to Boston and the next day the sore throat was back and almost just as bad as it was before. No more runny nose, coughing continued but very rarely, coughing only occurs when I get a bad itch in my throat. I've been back home about a week and a half now and the sore throat continues to be an issue but it comes and goes. Never fully goes away but, it starts to feel better, and then all of the sudden it gets worse to the point that it's hard to swallow again. At this point, I cough only whe