I was flat on my back in a hospital bed with a tube taped into my arm when a woman from the lab called and told me my own blood didn’t come from a stranger.

I’d been in a wreck on I-95. Some guy ran a red and t-boned my car, and I lost a lot of blood before they got me into surgery.

Three units of O-negative. That’s rare, the kind they don’t always have sitting around. The nurse told me later I was lucky the donor blood matched up so clean. I remember thinking, lucky, sure, I’ll take it. I just wanted to go home.

Then a few days into recovery my phone buzzed. A woman named Paula from the lab. Polite, careful voice, the kind people use when they’re about to say something they’re not sure how to say.

“Mrs. Torres,” she said, “your anonymous donor blood was a near-perfect tissue match. That’s pretty unusual for an unrelated donor.”

I wasn’t really paying attention yet. I said, “How unusual?”

She got quiet for a second. “The genetic markers suggest a first-degree biological relationship.”

I just stared at the ceiling tile above my bed. There was a water stain on it shaped kind of like Florida. I don’t know why I remember that part. My brain just sort of stopped working for a second.

Here’s the thing nobody at that hospital knew. I’m adopted. I was placed when I was three days old. My mom and dad, my real mom and dad, the ones who raised me, they never had a single piece of paper. No name. No history. Nothing. My mother used to say, “We don’t know where you came from, baby, we just know you were ours the second we saw you.” And I believed her. I had to. There was nothing else to hold onto.

So when this woman on the phone said the words first-degree biological relationship, I genuinely didn’t understand what she meant at first. I think part of me didn’t want to.

“Are you telling me,” I said slowly, “that whoever gave me this blood is related to me?”

“We’d want to run more tests to be sure,” she said. “But yes.”

I didn’t sleep that night. I laid there with the monitor beeping and my husband Marco asleep in the chair, and I kept thinking, somebody out there shares my blood and they were just walking around this whole time. Thirty-eight years. While I grew up wondering if I was given away because something was wrong with me.

The lab ran their extra tests. Paula called again two days later. And this is where it stopped being a medical thing and started being something I can’t explain.

“The donor has blood in our system going back about thirty years,” she said. “Same person. Donates every eight weeks like clockwork.”

“Do you have a name?” I asked. I wasn’t even supposed to ask. I know that now.