I Believe I Had The Flu Starting On 1 Feb.,

I believe I had the flu starting on 1 feb., its been 2 weeks as of today 2/14. the symptoms, when it started were coughing heavily, running nose, nose congestion, coughing up a lot of thick green phlegm, muscle aches, and pains over my entire body. Then starting this past Monday I believed I had gotten a got a low-grade fever. I thought the flu, went away because I starting to feel better, but the coughing continues and I'm still coughing up phlegm, not as much, but my nose is still congested and like tonight it's 4;41 am and I can't get any sleep, I'm woundering if its time to see a doctor? I use nondrowsy ibuprofen Cold and Sinus sparingly to treat, but it feels like it's not helping, My voice is horse also at this point.