how to help husband learn about pregnancy

I have a great husband, but he is starting to get to me because he doesn't seem to understand how pregnancy is affecting my hormones. I'm only five weeks so I don't look pregnant and we've only known a few days, but I've been extremely emotional and he thinks I just need to stop being dramatic. (Ok normally I am a little dramatic but these hormones are intensifying everything plus the no glass of wine at night) Is there a resource where he could learn about what to expect from me and this pregnancy?