, eclectified. Virtually all DVD players will play a CD just by hitting the Play button (the little right facing triangle icon). Typically the fast forward and skip buttons will work as well. Audio will be output either from the RCA white and red connectors on the rear, or from a headphone jack (if it has one).
40 weeks. You will have an appointment at 40 weeks if this is your first baby. Your midwife or doctor should give you more information about what happens if your pregnancy lasts longer than 41 weeks.
About the blood tests, I didn't hear back about any results until my booking in appointment with my midwife at 15 weeks but I think if they find a problem they would get in touch as soon as they know. But again it depends on your area and how the community midwives work.