Late period

Alondra • 19,married to the loml ❤️,mom of boy👶🏻

I’m 2 days late on my period ,9 weeks postpartum I already had my first period so this’ll be the second period . Every time I wipe there’s pink and stringy discharge ..but I’m not actually bleeding . What could that mean ? It’s not itchy or has no odor we’ve had protected sex a couple times including about 3 days ago and I was fine until the day of my “period”