Lying boyfriend

So me and my boyfriend been together almost 2 years, he has another child. So yesterday he said she was coming over to get money, which is cool and all, but he left with her now I found out he is in a different state with her family having a "family vacation". He has not told me this I had to see pictures through someone else. He is not even answering the phone or responding. Am I overreacting? Especially when I'm pregnant this is our 2nd child. We were suppose to go to the beach this weekend and I'm so disappointed because he's already there with her