Hi. My Period Was Suppose To Come 08/09/2015. My Last

Hi. My period was suppose to come 08/09/2015. My last period was 07/12/2015. I have been cramping for the past couple days but its only been mild, nothing extreme. I have had very light pink blood at least 2 times since my last period ended but the first 2 times were after sex but there was no cramping. It was random. I figured it was due to sex since I read online that it was possible. Yesterday when I wiped it was very light pink blood. I have not had sex in almost two weeks though so since my period was suppose to come on 08/09/2015 I figured this was it. I used a pantyliner and when I checked back hours later it had stopped. Just trying to see if my period is on its way.