I have a 28 days cycle & my period last for 8 days. The last day of my period was september 6th I had sex from September 5th to the 7th. I was taking pill up to the last day of my period, until I missed out Tuesday & took 2 pills on Wednesday. I stopped taking the pills since then & the pack ain't finished. Since Thursday I start seeing brown spotting when I wipe. What does this mean? Am I likely to not get pregnant