On Monday December 17th I Started Depo Provera And The Next Day I Had Unprotected Sex And Took NextChoice About 10 Minutes Later. I Should Have Started My Period On The 20th But Haven't. I'm Very Sure I'm Not Pregnant, I've Taken NextChoice Before And It Has Delayed My Period And I've Had Cramping Just Like I Would During My Period. My Main Concern Is, Is My Birth Control Still Going To Be In Effect Today Like It's Supposed To Be Since It's Been A Week?