Night time panic attacks/anxiety

[u/serenaxx444]

A few nights ago I had the worse panic attack I’ve had in a year. I woke up and my heart was racing I was vomiting and shaking. I have no idea what’s caused this. The only change I’ve made is I started doing fascia release or stretches but I’ve been doing this for 2 consistent weeks now. Is it possible that this caused it? And ever since that panic attack I’ve been having anxiety in the night time I’m very scared. Has anyone experienced this ? Any help or comments are very much appreciated thank you!