Am I being too sensitive?

Tomorrow is my stepdaughters birthday, she’ll be turning 10. At first my husband said he’ll be picking her up from school and bringing down here. So when I said he didn’t have to come pick me up if he only was going to pick her, he could head straight over there after the gym to get her. He said ok. But now I came to find out that he’s taking to a sushi place and having dinner with her. Which I am not coming to. Later, he’ll stop by his other kids house to say hi and maybe go to the park all together which I am not coming to either..... and he hasn’t said anything about me coming. When I asked if I was going to be able to see her at all, he said yeah I’ll bring her down here so we can give her her present and take her to go get a game for her Wii because that’s what she wanted. So I said ok. Basically she’ll only be coming for a bit and leaving back to her moms.... am I being too sensitive because I am not coming to any of the other things?