Phlegm A Lot Of Blood I Have Been Hacking BIG Chunky Phlegm For The Last 3 Days & My Throat Hurts BAD. My Phlegm Has Blood In It?

I have been hacking BIG chunky phlegm for the last 3 days & my throat hurts BAD. my phlegm has blood in it? - phlegm a lot of blood

I hack phlegm, because they are stuck in the throat and today I have a great big one with a lot of blood in itself .. my neck hurts when I swallow and eat. What should I do?