Am I wrong? What should I do?

I just need someone to talk too, I have no one so I turn to this app.

So basically I want to know if I’m overreacting.

My husband and his friend who work together doing Uber were talking about going to Denver for a weed festival or whatever, so my husband comes home and tells me that he was THINKING about going to Denver for a weed festival and that he thought it would be really fun & whatever i didn’t say anything to him I just smiled and nodded because really we don’t have money to spend on a plane ticket to Denver and a hotel room etc so I just stayed quiet. Anyways later that day he leaves to go visit his moms house which is two hours away and he calls me to tell me that his friend brought the tickets already and confused I asked him what tickets and he says for Denver, at that moment my head is spinning because I swore I he said it was a idea, a “thought”. After he told me that I just lost it because we have been struggling lately with everything, bills etc. I am 6 months pregnant with our second and I have been counting pennies since he is the only one working because I had to leave my job because of my pregnancy. For example last week I asked him for $50 (I don’t like asking for money, it’s embarrassing so it was hard to do so) so I could buy some maternity clothes since everything is getting tight on me and he said he could only give me $30 so I was thankful I got something. On top of the usual bills we owe 3,000 to a hospital for some ultrasounds I needed for the baby (which we haven’t even paid a dime too) I asked him why he told his friend to buy the tickets even though he doesn’t don’t have money right now even for baby clothes (we been getting used baby stuff at a thrift store) he went on to tell me the tickets and hotel room was cheap and everything. He went on to tell me that he told him it was okay to buy the tickets after he “talked” to me about it. I just don’t know what to do, I feel like I should be upset but at the same time I feel guilty for getting mad at him when he always says “i keep him back from doing what he wants” and that he is the only one working. Am I wrong? What would you do?