Is colostrum a sign of second pregnancy?

I had my baby December 2019 and stopped breastfeeding January 2020. I haven’t leaked milk since then.

All of a sudden today I am leaking again!

Is this an early sign of pregnancy for second pregnancies? It’s not the only symptom I am experiencing that could mean pregnancy but it’s the only one that’s really making me think that I might be besides also peeing a ton!