hi.. i'm 21f.. i feel like there is something stuck in my throat for the past two weeks and cough.. i consulted the doctor soon after and he said there is nothing to worry.. he prescribed a antibiotic, painkiller and gargling for five days.. but i don't feel better.. last night i had blood taste when i cough and today i bleed when i cough.. what should it be..? is it dangerous or serious?