Well, generally speaking, crying too much can not lead to subconjunctival hemorrhage. So there is nothing you need worry about. But you also need know something more about subconjunctival hemorrhage. As we know that a subconjunctival hemorrhage is similar to an ordinary bruise on the skin and it's like a bruise of the eye. It usually appears as a single, concentrated spot of red, or many scattered red splotches, on the white of the eye. Also, we can not say the causes clearly. But some injury to the eyes can lead to them. In addition, sometimes they occur after a bout of coughing or vomiting. High pressure is also an essential factor. So you should pay attention to them. Anyway, just be careful about it.