Am I obligated to pay child support for a child that isn't mine?

I had myself sterilized at age 19 because I never want to have children. I haven't told anyone about this though. about a week ago my girlfriend told me she is pregnant. I immediately threw her out of my house because like I said there is no chance I could be the father. she is now living in a homeless... show more I had myself sterilized at age 19 because I never want to have children. I haven't told anyone about this though.

about a week ago my girlfriend told me she is pregnant. I immediately threw her out of my house because like I said there is no chance I could be the father.

she is now living in a homeless shelter. she has called me and said she plans to sue me for child support.

can she make me pay when it obvious I'm not the father?
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