wAt does a red phlegm means?

today, when i went to toilet & spit out some phlegm, quite alarmed that it is red colour phlegm....

actually its not the 1st time tat it happens, occasionally will have red colour phlegm but tat is v rare. not sure wat causes it, i dun haf nosebleed, & is not heaty, i drink alot of water everyday but saw the forum from internet, sometimes can be caused by sinus.....well, look abit scary then! hope its not a big deal or wat but feel kind of uneasy, can still taste the blood at the back of my throat.....

well, maybe shall monitor for a while more, see if it gets better, if not, then i have to visit doc already......hope its nuthin serious!

okies, going to knock off quite soon! todae going to finish up my gokusen 2! hehe, then maybe wld want to proceed to watch nobuta wo produce, also act by same guy, kamenashi kazuya & maki horikita! that show received v good feedback, think its abt friendship! hoho! tis wkend wan to rest & continue to watch shows, perhaps revised my jap also, nxt week starts lesson already & i have not prepared my revision, wait forgot everythingz! tis coming mth, june quite tight, got to save $ manz, pay jap lesson fees & my unisim fees as well.....hmm....hope its not too much.....