Symptoms- Over A Week Ago -wednesday Night... Snot Draining Down

symptoms- over a week ago -wednesday night... snot draining down my throat. very soar throat that night and the next day. By friday no more soar throat but was extremely tired and severe body aches and shakes. been to the dr 2 times. tested for strep throat, mono, influenza and all were negative. still very weak and severe body aches and shaking . been resting for days. thanks pam