I had a dream last night. First I dreamed that I killed my cousin's child-,and then I dreamed that I got married and gave birth to a little boy. What does this mean?

Normal people do not dream. There are two kinds of dreams: one is physical problems, such as dreaming of flying, mostly because the lungs are mountains in the human body, and the other is dreaming of calling dead relatives, which is mostly ominous. Most people often have this dream when they are dying. Your dream does not belong to the latter, but to the former. It belongs to the kind that you have physical problems. Dreaming of children's death is mostly due to kidney problems. Dream of getting married and having children, mostly because of heart problems. So, your illness is related to the heart and kidney. I guess you may have been working too hard recently. This kind of mind is mostly caused by emotional entanglements and long-term depression. I suggest you adjust your mentality and don't worry too much.