The only thing ive noticed is the most tiniest ammount of old blood mixed with cm. Also one time i noticed a little drop of pink blood. I havent even had cramps just little twinges in my lower pelvic area. Im not on birth control and am sexually active but i usually have extremely heavy period and massive cramps. I never have sore boobs before i start my period either but now they hurt so bad i had to get a bigger bra. The only thing is i bought a dollar preg test and it was negative. Im really confused!! please help!!