Implantation or Pre-Menstrual Spotting- CONFUSED AF

I have relatively normal cycles. According to the glow app my cycle should be starting in two days- however, I am one of the few people that experience ovulation pains each month on the day of ovulation. I felt that pain between the 14th and 15th of this month, not on the 10th as my glow chart recommended. This evening when wiping I am spotting: ( light pink)! Now I’m unsure if my cycle will actually start in two days or if I am indeed experiencing implantation bleeding.