Seeing blood in a dream is very memorable and auspicious though the actual interpretation of such a dream is highly dependent on the actual circumstances and the general flow of events in the dream itself.
If you dream that you are bleeding out of a cut or wound it means that the next few months will be a period of anxiety and restless largely in regards due to your professional life. If you are able to stop the bleeding and patch up the wound it is a very positive sign as it signifies that you will be able to find a way out of your
Seeing that your clothes are blood stained means that you will be in trouble largely due to the wrong doings of your friends. This dream is also a predictor of changes in your social circle. You might become more distant with some of your friends and become closer with others.
If you see someone that you know bleeding it means that the person in question will be struggling with poor health and low energy levels in the upcoming time. If you are able to help them by stopping the bleeding it means that you will help them to get better in real life also.
If you see that your hands are drenched in blood means that you need to be very careful in the professional life in the upcoming time as you are walking on thin ice. Someone might be eagerly waiting for you to make a mistake and they will not hesitate to use this mistake against you.
To make a blood donation in a dream means that someone will ask you for a big favor in real life. This will come as a surprise to you but you will be able to help them with their demand. Your efforts will be appreciated by the other side.