Angry all the time...

My husband and I have found out that we are pregnant again. Our first two pregnancies ended in miscarriages. I am so thrilled to be pregnant again, yet I can't get a handle my emotions. I find myself getting angry at everything even small things. My husband is being supportive and trying to deal with me being crazy, but I'm taking a lot of stress out on him. He keeps telling me to take things easy and not stress too much. I feel completely awful. How do I get a grip and not want to turn into rage at everything? He doesn't deserve for me to lash out on him, I feel like I start to try to contain myself then all the small things build and I'm out of control everyday. This is not like me. Please anyone tips? I want this time to be joyous for us both.