Hi! I Had An Important Question About Something. I Got

Hi! I had an important question about something. I got my period August 31 and ended September 8th. I had sexual intercourse the week after and complications happened which I went to a pharmacy and took the Take Action contraceptive pill. I have been getting the normal side effects. It's now October 3rd and I still haven't gotten my period. I have taken pregnancy tests and the all come out negative. I just don't know what to do.