This is my first month on tri-sprintec. I have been bleeding since the second monday of pills and it is currently the third tuesday. At first the blood was light, like breakthrough bleeding, but then it continously got heavier and more red till it was similar to a period. My periods before birth control were no longer than 4 days and I'm not sure whats going on. I am supposed to start the sugar pills in 4 days, will I have another period or will I continue to be on my period until I start my next pack for a total of a twenty days?