My period 14 days late


Hello I new to this site so here my story my last period was on 18th September and it finished by 21/22nd my period was due on 16th October and I still haven't got it I've done test and keep gettin negative test had qhite discharge got back ach thrown up few time feel sick my nipples are senative I haven't done test first thing in morning so doing that in morning I just don't get it never been this late before and surely if was pregnant it would show up in test by now even if did it at any time I'm just confused was wondering if anyone else had this sort of experience