Am I crazy or was it just my hormones??

About a month or 2 months ago I was supposed to go to the movies with my  boyfriend he called me about 3 days before to tell me he's bringing a friend the minute he said that I knew who he was bringing before he said her name it was his ex/best friend apparently they were talking earlier and our plans came up so I assumed she invited herself along cause she's been telling him how she wants to meet me(btw I don't want to meet her ever but I know it's inevitable) after he said that I didn't want to anymore but I changed my mind and was going to show up looking flawless but as luck would have it my period started the day before so I could go I have the worst cramps but just so I can shorten the story this is what happened next I called two female friends of mine telling them the situation (he went with her and his little brother to the movies) so I got more in my feelings and upset so the second my period let up I went to the movies waited in my car in the parking lot to see who she was and make sure everything was just in the realm of friendship then I went to his house to make sure he went home which he did with just his brother...so am I crazy cause this is the first time anything like this has ever happened with anyone btw he still doesn't know