Yes, after hearing for the first time that you have some form of retinal degeneration which may progressively lead to blindness, it is not unusual to experience fear and confusion.
Some people accept the situation more easily than others.
Some go through a temporary period of depression before they come to terms with the situation. In addition to frustration and depression the feeling of being alone is apparent. It is worth joining an experience - sharing group in your area. Contact the Retinal Preservation Foundation for more information.