Cough,cold,green phlegm indicates lower respiratory tract
infection and also involving vocal cord.Blood in sputum should requires investigations.
You should go for complete investigations like cbc,esr,sputum afb,chest x-ray and if required tb ig G/ig M.
Start treatment according to diagnosis.
Otherwise you have to take proper antibiotic
Take nsaid with antihistaminic.Bronchodilator
Consult your physician for further guidance and proper medical management.