Could you be pregnant if you had an early light period then the next month had a late normal period and now have sore breasts with a negative pregnancy test and you are on birth control?

Hi, No you are not pregnant hun. Your period was like this because Birth Control Pill is adjusting to your body. This can cause light and late periods. If your period is late again next month and doesn't arrive during the 7 day break when your taking the non-active pills, then see your doctor and change your Birth Control.