I feel so hurt and stupid

Okay so to make a long story short, basically I'm completely broke rn because I don't get paid until Thursday & me & my fiancée family are suppose to be going on this last minute trip tmmrw. I'm pregnant & it involves needing a bathing suit and some other things that I don't currently have. Basically my fiancé told me yesterday and all last week, being that he gets paid weekly that he would give me a couple dollars to get the things I need being that I'm currently broke until Thursday. Today is the day that I'm suppose to go and get everything I need which he promised me, but now he doesn't wanna give me it .. I'm upset bc he promised me & I've always spent my last on this dude since I got with him, I would even pay for his way when we went out to places. I'm hurt bc I feel stupid for always going outta my way spending money on him before myself when he was broke, had no bed to sleep in, was starving & had no food to eat & he couldn't even give me the couple of dollars he promised he would. I cook for him, do everything, buy the groceries & this is how I get treated. I understand it's not my money but do I have a right time be upset? I was looking forward to it so I could go on the trip but I guess not.