Several family members tested positive for covid today, i have a severe sore throat is that a sign?

May be a sign. Throat pain can be from a strep throat infection (antibiotics needed), a cold or the flu (antibiotics usually not used), or from another 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 tends to have cough, whereas strep usually lacks cough but has more throat pain.

Since your family has tested positive, and if you have been in contact with them, COVID 19 should be excluded. Treat the symptoms and please arrange for testing locally. Remain isolated and hydrated until test negative and symptom free for three days. Watch for cough, shortness of breath, loss of taste or smell.