What should I do if my girlfriend says she’s pregnant but I’m sterile?

After college, I had an accident that left me sterile that even my family didn't know about. I've always been okay with not having children, so I moved on and focused on my career. After my master's degree, I found a great job and my family pressured me to get married, but I wanted to take time for myself.

Eventually, they introduced me to the daughter of a family friend. We hit it off, but looking back, she agreed with everything I said, which felt weird. I told her I never wanted children, and she said it was okay. We had sex (with protection) a month ago, and she started pulling away after that. I assumed she had lost interest.

But now, out of the blue, she and her entire family showed up at my house and claimed she was pregnant with my child. I was stunned. I was sterile. I hadn't told anyone. I was completely lost right now. Any advice?

What should I do if my girlfriend says she’s pregnant but I’m sterile?
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