My period was a normal 6 days, ended 4 days ago but yesterday I started spotting again, not like a period but really faint with almost no abdominal pain. My boyfriend and I are really careful and know which days I ovulate and we protect ourselves on those days. I understand "implantation bleeding" happens before your monthly period so I know its not that. Is there a possibility I could be pregnant or should I schedule a doctors appointment? Please help me, thank you