hi im ria

my period suppose to come on 17th of this month..now is 29th of the month but i dont have my period yet i experienced excruciating lower back pain yesterday and slight lower abdominal pain.. am i pregnant?? though i dont feel eny symptoms of it like vomitting or dizziness..i just uncomfortable because im worrying that i might be pregnant i was so stressed i dont get enough sleep every night thingking that i might be pregnant .. help me pleaase