what's going on? 😩

🌸🌷🌺
My period was suppose to come around the 3rd of this month. No signs of if yet. Took a pregnancy test just now, it's negative 😩 do I need to wait longer? Or is there reason why periods are late? I just got off birth control in January, but my last period was regular so I wouldn't think it would affect this one.Â