Well, you'd better stay at home and have a good rest, avoiding doing any powerful exercise which is harmful to your eyes recovery. The blood vessels are the part of the circulatory system that transports blood throughout the body. There are three major types of blood vessels: the arteries, the capillaries and the veins. When one of these tiny blood vessels bursts, you will notice a bright red or dark patch on the whites of your eyes. Meanwhile coughing, straining, crying, vomiting, rubbing your eyes can lead to a blood vessel. However, most of the time, no obvious cause can be identified. You cannot give us details about your condition, so I don't know what kind of blood vessel broken in your eyes. You may well go to see a doctor and bring a note from him/her, and then you can receive a good and right treatment. Although some kinds of blood vessels broken can recover soon without any medical treatment, you still wouldn't look down with them.