How much would it cost to get your dog groomed?

i have a german shepard/husky so shes pretty big nd fluffy. how much would it cost to clean/groom her. also how long would it take? bc she jus had babies 2days ago and i dont want her too long away from her kids. also should i take her to a professional groomer or petco or petsmart? could you tell me how much it woud cost at all those places. also since she had babies could i still get or groomed or do they put a chemical on her that woud hurt her kids