Let down feeling in boobs. 🤰🏼Sign of pregnancy?

Aryn

Had my son 8.5 months ago. Stopped breastfeeding at 4 months. AF is due any day now and I keep getting that let down feeling today? 🤷🏼‍♀️ I haven't had that in months? Anyone have an explanation? Could it be a sign of pregnancy? My husband and I just started "trying" again since it took us so long with our son.