If you are not seeing a Summer 2018 course that you have registered for in your "My courses" list it just means that the instructor has not made the course available to students yet. Once the instructor has made it available to students it will appear on your "My courses" list.
If your instructor has made a course available to students and you are still not seeing it in your "My courses" list please contact IT at 952-888-4777 x357 from off campus, 357 on campus, or send an email to it@nwhealth.edu for assistance with accessing your course.