According to the
dream dictionary blood represents "the life-giving, vital part of our physiology and it may symbolize our strengths and weaknesses and our physical and mental health. If you are currently experiencing a very difficult time in your life, you may have dreams with bloody and frightening images. Don't worry; you may be venting your fears! Some believe that when you see blood in your dream, the distressing situation in your life, which is at the root of the dream, has come to an end, and the worst is over."
I think the fact that the blood came from your genital area, and that your body parts started to grow by themselves, emphasises the life-giving aspect. I think the dream shows that you have the strength to carry on and renew yourself after a bad event in your life.