i found a stone in my urine (blackish color) 2 weeks ago and when i went to the doctor he gave me some antibiotics for treating infections cause he said i have uti (having done urine culture)...and now im getting blood in my urine ...like a white tissue with blood for the past few days...and im getting so much pain near where my bladder is when i urinate ..im also having alot of back pain and stomach pain too .. i dont know what it is :-( please help!!!