My dog is pregnant.milk started coming out of her nipples yesterday,she is near me a lot.wants to lay down but cant seem to get comfortable.her breasts are full and she wines a little bit.when will she have them? Please answer fast

Colostrum may come in a week or so before or not until right at whelp but most often is a day or two before. The colostrum is where the pups get the bulk of their antibodies, the actual milk comes in day 3 or 4 after whelp. There is a run down on pregnancy and whelping basics and detailed links for you in the link. Pretty much a crash course, what to expect, when to be worried, when she needs the vet, supplies, tips ect.  Good Luck.
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http://www.woodhavenlabs.com/breeding.html