What sickness could this be, and how to take care of it?

Okay, my throat hurts everytime I swallow, my nose is runny all the time, i have a small cough, my body feels extremely weak, and some parts sore.. i keep spitting out phlegm, my body feels cold, but my head is warm.. i take Theraflu often.. I've been sick 4 days already.. Tommorow is monday, i might need to work :(.. i feel really sick :(