In september I was positive for covid and also had covid pneumonia. For which I was hospitalized. Later all the tests came negative and I am free from covid with positive antibody test. But I have been experiencing this issue of daily fever of about 99f at evenings. I consulted many doctors took many tests but still fever comes at night. Had undergone multiple antibiotics for the same but still this continues. What you think the reasons can be because it?s been more than 2 months for fever at night hours. Please suggest if any tests required or any suggestions will help at this moment.