Suggest Remedy For Blood In Stool And Pain

a few months ago i started have fresh loking blood on top of m stool. it almost looked like someone put syrup on ice cream.. it aslo hurt coming out.sharp pain. well it happened about five times. its been a coupe months since it has happened. now im having a horrible tast inmy mouth with black stoo, my toungue is black and the only thing i threw u acidy looking stuff. im dizzy and upper stomach is cramping, t