I have sore throat (mild with no mucus), mild to moderate headache and body ache. all these started yesterday when the sore throat started. the headache is frontal. please note i also have sinus! could this be covid-19 symptoms?

Maybe. Maybe not.: Throat pain can be from a strep throat infection (antibiotics needed), a cold or influenza (antibiotics usually not used), or from some other cause such as allergies or irritants. Usually, a person sees the doctor (call first) if the sore throat is bothersome, recurrent, or doesn't go away quickly. COVID-19 infections tend to have cough, whereas strep usually lacks cough but has more throat pain.

Possibly: COVID 19 Sx's may include fever, cough, feeling tired, shortness of breath, muscle aches, headache, sore throat, chills, chest pain, nasal congestion, loss of taste or smell, nausea, vomiting, diarrhea. Get urgent care for difficulty breathing, blue lips, persistent chest pain/ pressure or new onset confusion.