I am a healthy software designer,46 years by age. I just came back home from a trip to UP and my throat is sore. This happened the last time I came back as well. Im confused. Im wondering if I have an allergy or if Im actually going to get sick.
It might be due to tonsillitis which is happened due to change in place and water. Take a ENT consult and start treatment. Do warm salt water gargling at least 2-3 times a day.  Chat Doctor.