Mastitis after vaginal infection?

[mollyelizabeth]

Hello.  I am three weeks postpartum, delivered twins vaginally in July!  This was my second pregnancy.  I have since developed a bacterial infection vaginally.  My doc prescribed Metronidazole for that, and two days later I had a horrible fever and chills all night long (which I thought was a side effect of the Metronidazole) and my right breast was horribly red and really sore!  I also had a cramp in the right side ovary.  I went back to the doc, for the ovary pain (thinking the breast thing would resolve itself I stupidly didn't mention it to him).  He thought I had a secondary infection in the uterus and gave me Augmentin to take along with the other I am taking.  It has been 36 hours and my breast is still really red and sore.  I don't know what to do!  I am worried that it may lead to sepsis??  Or should I not be worried since I am taking augmentin?  It is the weekend, so I can't call my doc again.  I haven't had a recurrence of fever or chills.  Was the fever just a symtom of Mastitis?  
Should I go to the ER and have blood work done?  Or should I just calm down and see if the two antibiotics work?
Thanks!!!!!