Early period? Weird discharge

Courtney

My period was due today. On Tuesday that evening I started having brownish discharge with a very small amount of reddish blood. Barley any red blood at all. Well I woke up yesterday with brown discharge, it was brown all day with very small amount of reddish blood. Today has been the same as yesterday. I haven't had any period pains like I usually do. When my period starts my back always kills me but nothing. What is going on? When my period starts it's always bright red heavy flow. Its never been this way why? I did BD on my ovulating days because my fiancé and I are trying to get pregnant. Is this normal or is my period all jacked up? Any advice would be great! 😊