[carmen in nj]

you need to bring her to the vet for an oxitocyn shot, she needs to have this within 24 hrs of whelping. is VERY important if you suspect a retain placenta.
if you can get red rabsberry leaf tea, you can also give her half a cup now and half a cup tomorrow, this will help clean her uterus and help her with milk production. with 4 puppies is very important that you keep an eye on her calcium, with all that said, congratulations on your babies..
hugs,