Mommies I Don't Know Whats Going On :$ My period was on the 11 of this month I Stop Taking My Pills…

Mommies I Don't Know Whats Going On :$ My period was on the 11 of this month I Stop Taking My Pills Since September We Havent Used Proteccion I'm Feeling So Much Pain I Feel Like My Period Its About To Be Here But Nothing Yet I Have A Period Tracker App And It Saids My Period Supossed To Be Here Yesterday, I did a pregnancy test on friday and its came negative...Whats going on? Should I Do A Pregnancy test? Or just wait until 11 of next month?