Too nervous to get excited

This is my first pregnancy and as happy as I am. ..I can't help but be too nervous to truly enjoy it. I am at 6 weeks today and I worry about losing my baby everyday. It would completely break my heart to have something happen to my little miracle growing inside of me. Everytime my mother or my significant other get excited about it i always have to remind them it's a long journey and anything can happen. My good childhood friend lost her baby a week before she was due to give birth and it reminds me that nothing is totally safe until he or she is really here. I want to be joyful and excited I just keep letting fear take over the best of me. 😳