I am 14 and have a constant dull, dull pain (like pressure) near my groin (bladder? kidney? not sure) and today when I was urinating I saw something blood like come out and splatter onto the seat. (I am male) It looked like blood with black dots in it. I continued urinating and stared at it (urine was a dark yellow color). I have small pain when urinating and after I am done urine continues to drip out inconsistently at a small rate for 1-4 minuets.
I would really like to know what the potential problem is so I know if I should go to the doctor or not and if I do what to expect.