I just wanted you to know that you're not alone in feeling apprehensive, honey!! I didn't worry too much about stillbirth when I was pg with my first, because I don't know anybody who has suffered such a tragic loss and I wasn't really researching that aspect of labour and birth. I didn't realise it was as common as it is (which is still very UNcommon, I should add, lol but I honestly didn't realise that it does happen more than I had first thought.
Then when I was pg with my second bub, I did begin to stress about it a lot more. It seemed every other week there was a funeral notice for an angel who was 'born sleeping' and I was reading stories of loss on here and other sites and basically scaring the absolute pants off myself. It got even worse when I went past my due date and noticed that a lot of the sleeping angels I'd read about were either very premature (which was no worry as I'd passed term) or were a week or more overdue (that was my concern). I think that fear literally willed my body into labour, no way was I going past a certain point without getting my baby out while she was still kicking!

Thankfully my fears proved to be baseless, and both my girls were born healthy and complication-free. I don't really consider myself lucky because I know it is far more common for a healthy, live birth to occur than a stillbirth, but I do feel blessed because I can't even imagine the heartache of such a loss.
As far as I can tell, there seems to be little rhyme or reason when a baby dies in utero - one of life's great unexplained mysteries. As long as your doctor is keeping tabs on your blood pressure and any other complications you might have, and you're receiving good antenatal care and looking after yourself, I'd say chances are you and your baby will be fine It's hard to 'just relax', but honestly there's just not much else you can do. But don't feel silly, this fear is definitely a valid one but unfortunately it appears to be out of our control whether it happens to us or not. Good luck