Covid-19 positive. 10/11 days since symptoms onset (headache, fever, fatigue, diarrhoea, loss of smell, dizziness). for 5 days symptoms had improved but now headache and chills/light fever are coming back. should i worry? when can i expect recovery?

COVID 19: Sometimes a persons symptoms can worsen around week 2 or 3 of infection. At other times, there may be sequela last for weeks (to even months in some cases). Keep monitoring your symptoms. For any significant worsening, let your doctor know. Get emergency care for difficulty breathing, blue lips or face, significant & persistent chest pain or new-onset of confusion.