It could be any number of things that a doctor is best qualified to diagnose. When in doubt, best to have it medically checked out. Once you know what it is for sure, you can best deal with it, which may not necessarily mean taking any meds that the doctor prescibes, unless it is a really serious problem that could become life threatening without the use of meds/ Antibiotics
In the meantime, you can try the following. I have experienced something similar from time to time and these two remedies have always given me relief.
1 tablespoon honey combined with 1 tablespoon cayenne and swallowed.
In a blender, blend the juice of one lemon, 1/2 teaspoon of cayenne, 1/2-1 teaspoon turmeric powder, 1 inch
peeled raw ginger, 1/4-1/2 teaspoon himalayan salt, and 3/4 cup non-chlorinated water. Throughly blend, strain to remove the ginger fibre, and sip slowly with a straw.