First trimester anger?

.
Anyone else experiencing extreme anger during their pregnancy? This is my second pregnancy and I don't remember being this angry during my first. I work in a hospital and I'm getting worried about my moodiness and extreme anger. I seriously want to kill certain employees over comments and laziness. I work graveyard and we are already dealing with understaffing but expected to increase productivity when people call in weekly...the stress is seriously getting to me!