Hormones driving me crazy...

Does anyone have a hard time with having a bad attitude while in their 1st tri? I'm SOOO moody and my SO thinks I'm bein mean, unhappy and just not fun to be around in general. I'm definitely happy that we are having a baby but other things in our life are just all over the place and it stresses me out. Has anyone else experienced this? Does it pass? Or is it just me?! I don't want to be a negative depressed person.