Just a little confused...

Hi! Please no negative comments I’m just asking questions bc I need help. (I’m 17) .So for starters my period is 19 day’s late! Last month I did have sex but we used a condom . Around that same time I took 1 of my birth control pills but I messed that pack up so I didn’t take anymore .(hoping this is the cause to all of this.) I tested around the 7th day late and it was negative . I tested again on 14 days late and it was negative again . Do y’all think it’s possible I’m pregnant ?I’m just trying not to stress myself out !