I Have Been Sick 3 Times In One Month My

I have been sick 3 times in one month my throat is sore and swollen my neck hurts I'm coughing up green mucus one time had a little blood in it I have really bad headaches everyday and I have sharp shooting pains in my head sometimes I'm tired all the time doesn't matter how much I sleep I'm still tired and I never feel like doing nothing because of it......what could be wrong