Strep throat or the common cold?

I got a sore throat on thursday and it got worse ... and then the next day i had a high fever/headache and my nose was runny/stuffy and i felt really tired and sick ..... my nose got worse through the weekend and my throat still is bothering me ... its been at least 4 days and usually my fever/throat problems haven't stopped including my runny/stuffy nose ... i am so congested and i dont know if i have strep throat if i do should i see the doctor? or just drink lots of water and chicken noodle soup like i have been plz help D: