Post covid recovery. Are negetive?

10 april to 15 april - Mild fever 99 to 100and weakness. 16.april to 20april - High fever 102/cold and Cough/excessive weakness. 21 april to 27 april- Streroid taken and no fever reported. 27april to 29april- excessive weakness and shortness of breath on walk and on sudden work 1may- 09may- feeling relaxed and started working from home and back to routine home related activities  but yesterday(10may) feeling effort full breath and slight breathlessness and family  doctor again advised for streroid for 5 days. Advice whether it is post covid symptoms and if yes then how much time he require to get recovered from this situation. Note- from 10 april to 25 april all 3 covid RTPCR  reports are negetive