Female Mother Pitbull Sick

Question
My 10 month old pitbull had 13 puppies 2 weeks today (7/4/06) and i noticed earlier she was real slow to move, had her tail between her legs, and was walking real slow.  Her right nipple from the front is swollen and hard.   She has diarhea also.  This isn't normal and her eyes are red.  Is she low on calcium? She likes to eat all day if you let her.

Answer
Yes...before you said calcium thats exactly what i was going to say....There is an over the counter pill you can get her at the vet.  13 puppies is alot for a dog that size. Be sure you get it right away cause with that may puppies it will only get worse.  Hope this helped Kati!