Postpartum adrenaline?

When I gave birth I basically had to have an emergency C section. When I found out I started shaking and couldn’t stop due to the fear and adrenaline. The shaking probably subsided after an hour. I went into surgery about 30 minutes later.

My baby is now about 4 days old. I’m the middle of the night I had a bad dream. It wasn’t nightmare fuel but it did scare me. When I woke up, I felt fine but a little nervous. As I was recollecting the dream, my whole body starts shaking the same way as before. Like I just had a sudden increase in adrenaline. I’ve never had that from a bad dream, and needed my husband to help calm me down.

Has this happened to anyone else? Is it like a ptsd from the birth situation? My bad dream had nothing to do with the birth, so I’m not sure.