I have been in contact with 3 positive covid friends, over the past 4 days i have had high temperatures, sore throat, loss of appetite,no sense of taste or smell?

Covid-19: Sounds like you have Covid too. Diagnosis is made if a patient has 2 or more sigificant symptoms: Fever, cough, sore throat, loss of taste and smell. You can get tested, but it will not change the treatment. Self Isolate. Use Acetaminophen for fever/sore throat, decongestant for nasal congestion, drink lots of fluids and take vitamin C and D.