Am I wrong for feeling upset?

My boyfriend told me last night that he was going to take me out to a fancy restaurant tonight to celebrate 2 things. My birthday and the exciting news of us finding out we’re pregnant with our first baby. Now I was so excited and felt super good about going tonight since I’ve had a rough couple weeks from being nauseous and my birthday was back in September and this dinner has already been cancelled twice since then so I was ready and excited to go and have a good time. Well my boyfriend calls me on his way home from work to tell me to reschedule it because he has to go practice for a gig tonight (we’re both musicians). I didn’t want to start a fight so I just said okay but I feel so disappointed. When he got home he showered quick and I asked him questions about the gig and I really wanted to ask him if he was getting paid for this upcoming gig and so I asked and he said he wasn’t sure. That’s the part that’s really upsetting me. If he cancelled our date night to go make extra money then I wouldn’t care but he cancelled just to go play and it made me feel not special. He is just going to have fun with friends. Made me feel that celebrating our next chapter of life isn’t as important as playing music. Am I wrong for feeling this way?