my periods are normally very heavy, dark red, and painful.  this cycle i am having the opposite, moderate amount of light pink blood, with just mild cramps. im not sure whats going on, has anyone had this happen or know why it is happening? ive never had pink period blood :o my SO has been cumming inside me but i took a pregnancy test 3 days ago (2 days before expected AF) and it was negative. should i take another or is this a normal period?