What could these symptoms mean?

Patient: I have been feeling the past symptoms for over 2 weeks and want to know if i should be worried.Constant headaches and Abdominal pains, dizziness, no matter how much sleep i get i am constantly tired and have no energy, Everything i eat or drink makes me want to spew and i have had bleeding from the rectum. There is a history of bowel cancer in my family so im a bit concerned.