My Last period was July 22, I have PCOS and am slightly irregular. I have started working out on a regular basis. Yesterday I started spotting. It was really light and only really noticed when I wiped. I'm feeling a little cramps but the spottiness isn't like my other periods. Could it be implantation bleeding?? Or has my new active lifestyle caused me to have an earlier and lighter period??According to the app I'm not supposed to start my period for another week.