Can anyone help me?

I don't know what's going on? 
​My period was due yesterday 
​All I have gotten was an extremely light pink, barely noticeable last night then very light browny red this morning 
​Was gone by say 9:30
​ Been clear ever since 
​And I have sore breasts 
​My skin is breaking out 
​I bloat. 
​I don't know what's going on? 
​I have taken pregnancy tests the last couple of days including today 
all are negative,