had my period nearly two weeks ago, and am suddenly releasing black blood. really dark black. i am sexually active, and have not been taking my pill. been having alot of problems in that area for 6 months now ever since i had my appendix removed in december, they did keyhole surgery, because we initiallt thought it was something to do with my ovaries or anything in that area. ive never had any trouble down there before, but since have had what i thought was cystitis, which i treated, but i didnt go away so i went tho the pharmecy and they told me it was thrush, so i treated that. none of the symtoms went away, so i went to my doctor and they put me on two types of really strong antibiotics, which didnt help, so they put me on another lot, which didnt help. aswell as all the symptoms, i find sex SO SO painful. but the thing thats worrying me right now is the black blood. please help.