Whats wrong with my period?!

Hey guys i take my pill correctly. I never missed a day and i take it the same time unless 5 or 10 minutes late here and there. I had sex a few weeks ago the condom broke but i took a test the other day and im not pregnant. I usually get my period on the 2nd day of my inactive pills and im already on the 4th day just waiting and im kinda freaked out? Does this happen to you were you period just flucuates?