Pregnant with my best friends baby (Niall Horan Fanfiction)

Hi I'm jessamine Tomlinson. I'm 16. I live in Doncaster. My best Friend is Niall Horan and my brother is Louis Tomlinson. When one day we get drunk and me and Niall kinda hook up and the next day they go on tour and about a month later I find out im pregnant with his child what will happen? Book 1.