On the 8 th of this month i was suppose to start a new pill pack- started it 2 days late and did not double up due to being extremely ill the last time i had to double up. In all honesty i figured if it was toward the end of the week that i would need to worry about back up protection. Never used it though. I noticed in last week my breast have been full feeling and very sore, have slight bloat and alittle cramping, but never went off pill just took it like normal, today when i wiped i noticed pink and my period isnt due til next week- most likely toward thurs since i started it late. However could this be early period or implantaion