Anxiety while pregnant?

Jessie • Floating along.
Lately I haven't quite been myself. I'm usually a very happy person, but lately I've been angry, sad and sometime I even lash out on people. It's like I can't control myself. I go way high and way low instantly sometimes. I'm having panic attacks at work. It's actually scarier than being pregnant and it's starting to interfere with my day to day life. I've never had any of this before becoming pregnant and I'm not quite sure how to cope. Has anyone been through similar? Has anything worked for you? I really don't want to use medicine for it.