Boobs leaking early?

So my boobs have been leaking, I suppose colostrum, since I was about 14 weeks pregnant. I will be 18 weeks on Wednesday! I was just curious if this is normal! I've always heard its normal in the third trimester or later in the second trimester! But never this early! Who else leaked early? And does it have anything to do with the type of supply you'll have once baby is here?