chinese tradition, they make a tiny long pillow about 12" x 5", inside put uncooked rice. When baby sleeping lay the pillow on her belly. Or you can try the wrapping, use a towel or baby blanket, make sure her hand is not free but snug with the towel, this way she feels like being hug and not easily frighten.

hope this help

dun worry its quite common BB just woke up crying like frighten, sometimes coz they've not adjusted to the outside world, my BB I notice her hands will be all over like nightmare. Confinement lady teach us to us the pillow and swaddle. It works like a charm.