New Pill

After taking a break from the pill I decided my cramps were so awful I wanted to go back on it. My doctor told me I didn't have to wait for my period to start and could "fast track" by starting it as soon as I got my prescription. I started a week before I was due my period, it was due yesterday and hasn't came even though I've had some cramps. Is it likely I'll skip this period all together? or will it come a little later than usual? Just don't want to be caught of guard by thinking it's not going to come and then it does!😂