PERIOD IS 9 DAYS LATE!!!

Alexis

Hello all, okay so my period is now 9 days late but I am 100% sure I'm not pregnant. This month is almost over and still no period. I also have felt no pre cramps a few days ahead of time like I usually do with my regular periods so I don't know when it could come or if it ever will? Does anyone have any idea what could be happening and when/if i should see a doctor? NEED ANSWERS ASAP PLEASE 😟😟😟