Dreams are sometimes funny things. Being pregnant in a dream doesn't always mean you will give birth to a human baby. Sometimes it's an idea you have, an invention, a new way of doing things, a new way of life. Blood instead of water. . . might mean the change will be messy and might not seem good, but since your "baby" was fine, the change will be good. Is there something in your life right now that you think will be changing soon or has just changed? The process of change might not be what you think will work, but in the end it will be for the best.