My boyfriend cheated on me on october 25th, 2015 I was devastated of course, well the worst thing out of all of this is the girl came to him in december saying she was pregnant....her due date is August 15th of this year....she didn't wanna tell me when her conception date was or her last period she said she didnt know.....I calculated it myself and I would say around November 9th is when she became pregnant....she said she had her period after they had sex.....im so stressed out....hurting....and angry....is it possible this is his child or could she be lying?? Thoughts?