My mother took Covid vaccine on 20th April. For first two days she was doing okay, but she kind of overdid some physical activities ( household and farming related) and then took head bath. Body pain was mild during that time.. from 4th day she started getting mild fever and extreme body pain .. fever remains between 98-99 and comes only once everyday (for past 3 days). I give her pcm. Oxygen is 96-99 . Mild cough is also there . Is this post vaccination affect or should I go for rtpcr test?