Yes, you’re part of a blended family.
Sometimes it’s hard to recognize reality when it’s all you know. I meet lots of people who are part of a blended family or stepfamily, but to them, it’s just family. One woman had two stepdads, a stepmom and many stepsibilings, and then married a man who isn’t the father of her child, and she never realized she was part of a blended family. Hey, 62% of couples under 55 have a stepparent or stepchild. You may be one of them. It’s okay. And, yes, you’re part of a blended family.