K.C.
I would call La Leche League you can get free advice over the phone:
http://www.lalecheleague.org you can look up a local phone # from there.
Sometimes they fuss because they are teething, it is a little young but it could happen. Or an earache or tummy ache etc. Definitely do not stop nursing just because of that, it is probably something she will work through one way or another and the advantages of getting mommy milk are worth figuring it out and sticking with it! Get help from LLL, they will know what to do!