How likely is it that I am the father?

[Amd12345]

This is more of a two series question. If I had sex with a girl on October 3, 2015, and she had a child on August 26th of this year, what is the chance of me being the father? She did have relations with other guys soon after me, but her first projected due date was July 25th which concerned me. After this bothered me for months I finally contacted her and she sent me a picture of an alliance paternity test that said the child was another mans. Along further researching this facility, I found an example of what the test would look like on their website. This example test had the same pi number, case id, batch Id, and same number of alleles collected for the father and child as the picture of the one this girl had sent me. I am lost. I know nothing about this company or its tests, is this just a printed copy of the website with a few edits? because the date and names were changed. This is making a huge bump in my life that I would like to get past, and I need opinions. Thank you

[AnnieBrooke]

You aren't the father, if the last time you had sex with her was October 3.  Even if she'd had the baby on July 25, you would be 4 weeks too early.  And she didn't have the  baby on July 25, she had the baby four weeks later.