(26F) and my (29M) fiancé and I are fighting

My fiancé (29M) is gone to the UK for his brother’s wedding. We’re getting married in August btw. His brother isn’t from there neither is his fiancé but they met over there during a trip. My fiancé and I are kinda poor compared to them and his brother told him not to feel obligated to go but he did because his family is all going to be there. So the invite was for him and a plus one and plus one being me. He told me months ago that I didn’t get invited which I felt upset by. Until last week before he goes he tells me that I was invited but he figured I didn’t want to go because of money and the dog so he turned it down for me. Honestly I’m really upset by it I feel trapped at home because I don’t have a car and I feel like I don’t have a voice. Am I wrong? I told him not to send me pics and just text me in case of an emergency because I’m so upset. I wrote the bride a letter too.