Why is it that when you are pregnant, some women see this as a green light to tell you all the horror birth stories they know? I had this happen to me all the bloody time!
Trin, don't worry, us women have been giving birth since time began, our bodies are made especially for it. With the knowledge and medicine around today, you are highly unlikely to die giving birth, and whilst stillbirth is not uncommon, you are 6 months pregnant and you can feel your baby moving so this is not likely to happen either.
Have a word with your midwife about how you feel. I would also recommend that you get hold of the NCT, you'll find their number in one of those books you get from the hospital, they do ante-natal classes which are brilliant and tell you loads of things that the hospital don't, such as the best positions for birth, and how to gain an extra 3cm I think, for enlarging your cervix during birth. They are small classes so are more informal and many of the mothers keep in touch afterwards. I chose to have a home birth with my second and the help and support they gave me, really helped me to feel in control of the whole birthing process, because it was being out of control that I feared the most.
Try to enjoy what is left of your pregnancy and focus on the days after the birth rather than the birth itself. Once you get to 9 months your body sort of shuts off anyway, so that you don't really care much, you just want it out! I didn't believe it did this, but it does!