The Red Cross lady on the phone was so casual about it. Like she was reading off a grocery list. “Mrs. Harris, your bloodwork came back with antibodies consistent with hepatitis B vaccination or exposure, likely in early childhood.” She asked if I had any questions. I said no. I thanked her. I hung up.

Then I just sat there in my kitchen for maybe ten minutes staring at nothing. I donated blood at the church drive because Linda from my small group guilted me into it. I hate needles. I almost didn’t go. I keep thinking about that. How close I came to never knowing any of this.

I called my mom that night. Kept it light. “Hey, quick question. Was I ever vaccinated for hepatitis B as a kid? The blood bank flagged something.” She didn’t answer right away. And look, my mom is a talker. She fills every silence. So when she went quiet like that, just for a few seconds, I noticed. Then she said something like, “Oh honey, I don’t remember every shot you got. That was forty years ago.” She laughed. Changed the subject. Asked about my daughter’s soccer game.

I told myself it was nothing. For about three days I told myself that. But the silence kept bugging me. I don’t know why. Something in the way she paused. So I did what any normal person would do and I requested my childhood medical records from Dr. Emery’s old practice. They’d been digitized when the office changed hands in 2006. It took two weeks to get them mailed.

I need to back up for a second. My childhood was good. I want to be clear about that. My parents, Greg and Diane Harris, they were solid. We weren’t rich, but I never felt like I was missing anything.

Dad coached my softball team. Mom made my Halloween costumes every year, the real ones with the sewing machine, not the store-bought kind. I had a normal, boring, happy childhood in a normal boring suburb outside of Columbus. I say all that because what comes next doesn’t erase it. I have to keep reminding myself of that.

The records came in a manila envelope. I opened them at the kitchen table after my daughter left for school. Most of it was routine stuff. Ear infections, a flu, the normal vaccine schedule. But there it was. January 1984. Hepatitis B vaccination. Age 2. And in the notes column, in Dr. Emery’s handwriting, it said: “Administered per biological mother’s request.”

I read that line maybe fifteen times. Biological mother. I kept thinking it was a clerical error. A typo. Some old doctor’s sloppy shorthand that didn’t mean what it looked like it meant. But it was right there in ink. Biological mother. Which means there was another mother. Which means Diane Harris, the woman who sewed my Halloween costumes and drove me to softball, was not the woman who gave birth to me.