NEARLY FAINTED AT WORK

Today as we were giving report at work I started feeling as if my blood pressure declined FAST. Out of no where I felt SUPER nauseas, cold, sweaty, and my vision started dimming out. Didn’t want to cause a scene so I just went and leaned to the nearest wall and started counting and concentrating to not faint. This was my first day as a psych nurse on the floor at my new job! so definitely was trying to keep shit together and avoiding attention lol. Is anyone else feeling this faint?!? I read it’s normal but I have never experienced that