Emotions... EVERYWHERE

I'm currently 12 weeks and I'm literally an emotional disaster. Don't want to leave the house...don't want to go to work (I'm a school teacher) and worst of all I cry at the slightest things. For example I didn't want to go to the grocery store so I cried. I'm so tired of my morning sickness so this morning I cried while hovering the toilet. Ladies- what is going on!? Anyone else an emotional wreck like this??? My poor husband doesn't know what to make of it.