iv had diarrhea for about 4-5 days now, and just this morning i noticed blood in the toilet. and when i wiped it looked like there was a small clot of blood. its hard to tell how much blood there was but im now feeling stomach achs, and my fingers on my left hand feels a little tingly, and feeling a little light headed. is this something i should go to the emerg for? i should also mention that this is the second time iv notced blood while having diarrhea, about a month ago.