I do not understand my problems. Corona?

I am facing coughing and sure throat problems but its not regular.. Such problem comes and goes.. I seems that is allergy for some particular agent as rice, curd, cold things, dust, bright fragrance etc,before 4 years i having problems thats tonsils and doctor had said to me that my nose bone increased.. Then i had taken prescription to doctor and my problems has been solved.. Before 2 years coughing and sure throat problem came and i taken Ayurvedic treatment and problem has been gone.. But November 2020 same problem available me yet now.. Such problem comes and goes i do not understand that what is this.. I afraid that is it corona? But i am sure that it can not be corona because last 6-7 month my oxygen level is 98% and fever not available, kindly assist me best..