I'm so fustrated!!!!

My supposedly 'best friend' has been so horrible to me my entire pregnancy. When she had her daughter I spent hundreds of dollars on clothes and furniture for her daughter. Today she posted on Facebook she was selling all her old clothes. I told her I will find out what my baby is in three weeks. She said she was selling them anyways because she 'knows' I'm having a boy... I then got upset. She had the nerve to call me a bipolar b*tch and told me to grow up and she hopes I did have a boy so I felt like a fool... Was I in the wrong to be upset? I literally cried because she was so horrible.