Really confused

Stopped the pill in March and bleed 14th of April . Ovulated around the 4th of May, was due on period 19th-20th this month . Had cramps nearly a week before and but only a little brown discharge and pink when I wipe. Not enough to change a pad as nothing is on the pad . What could this be? I’ve taken a test which has said no. I’m just a little confused 🤷‍♀️