Why and the heck

Em

So my period is not so until four days today mark cycle 24 why and the hell did I start spotting at 730 pm tonight! It’s very weird in color too! My period is never this early ever! The most it’s ever been early or late is one day. Gosh so annoying! My husband and really thought this was our month. What do you ladies think? Why is this happening? Ps my breast have been more sore than normal for two weeks! What is going on with my hormones this month? Any professionals or other ladies going through the same thing? Also I have taken a hcg test this morning but it was negative!