Producing milk early in pregnancy

So I've only been trying to conceive for a month, and I'm only 8 days past ovulation and tonight I noticed I'm producing milk, is it possible that I could be pregnant already and it's causing me to produce milk already? I never breastfed my last son who is now 15 months old and I've never noticed any milk until now. Plan on taking a test in the morning but figured it'd be too early anyway. I've never produced milk this early so just wanting insight!