This cycle is common in viral fever. Which need not be due to food or water. It can also be due to the weather change or spending too much tym with ac or cooler and also drinking very cold water. If there is no pain then i suggest u take precautions by taking water of normal temperature and avoid sudden temperature changes from AC to heat. Also taking steam and gargling with warm salt water will be helpful for reducing the frequency of your troubles. If pain is there in the throat or if symptoms persist then please visit a nearby ent specialist.