I have recovered from mild covid ..covid happened on May 10. was in home isolation.I used to have sinus issue..sneezing, running nose etc..now I started doing house hold works, i get lot sweat and again i get sneezing, running nose and feverish..This is normal or will i b reinfected.? I never went outside for past few months..I m tired still..How should I build the immnunity faster and lead a healthy normal life