So freaking hormonal!

I really really really thought I was pregnant. But it was just pms. 
I feel like because I thought I was pregnant, and was let down, my hormones are going crazy. 
For instance, every other weekend we go to my in laws for a family day. My husband invited a friend without telling me yesterday. I flipped out! 
Today, we made plans to spend all day together and he woke up, said hey, and walked out the door. He's been gone for three hours and is with one of his friends- an alcoholic who flirts with me and only talks to my husband when he needs something. 
I'm so ill and I feel crazy. 
Suggestions to calm my hormonal  self down?