My period started on the 26th. Early that morning, before it had started, around 5 am, I had unprotected sex. I am now on my 4th cycle day and my period is pretty much already gone. Could this be a sign of pregnancy? I’ve had 2 normal periods (this one being my 3rd) since having my son. The first was 7 days long, second was 6 days. Both being 29 day cycles. So I’m a little nervous this one already ending on the 4th day. I am a little tempted to get the morning after pill.