Army first time mom

Kaley
My ... I guess now ex fiancé.... Told me he was at the hospital so I called him worrierd. He said he was there with some girl and her dad because she needed a ride... Then he got all defensive and said he wouldn't mess up my babies life (not mine just hers) by cheating on me. The thing is... He's only home for another 20 days... And we just found out the gender of our baby and all... Now he's not even going to be in her life... What dos I do