regulating periods

anyone know a natural way to regulate your period?? My period is a couple days late and i’m on cycle day 45 or something it really comes whenever it pleases and so my apps are always out of whack and never really accurate so i always stress about being pregnant which maybe is why it’s late because i stress over nothing but i always use protection and pull out method with the condom as well and am very careful as i’m not ready to have a child anyways and the condom has never broke nor had any small

microscopic hole where it would even be possible for me to be pregnant but would like to regulate it without having to take birth control does anyone know wats to help this situation here?