Hi, so I used to have irregular periods, three years ago I had only 4 periods a year, now every month, and have been regular for about 2 years. My last period was from Augusts 23rd to 29th and I have just started slightly bleeding again with slight cramps and it September 9th. I also had unprotected sex on August 31st  and took the morning after pill on September 4th.  Does anyone know if this means I am pregnant or something is wrong? This isn't normal for me to bleed at this time, my period isn't due till October 2nd as my average cycle is 40 days.