Breast milk

Shukonia

So I had a baby in November 2017 I’m now currently 12 weeks pregnant. My boobs hurt as expected but they also feel like they do when their full of breastmilk. Could I already be forming milk this early since it hasn’t been a year since I have birth. Or just normal breast pain.

Note this is my third kid and my boobs never felt like this with my other two which are spaced out 3 years.