Pain in one breast while breastfeeding

Jessica
My daughter is 5 days old so this is all new to me but I'm wondering if I should call my dr or if this it normal... My right nipple is much more sore than my left and when she goes to latch onto my right I have a sharp pain... I was wondering if it was thrush because my daughters tongue was white last night but now that seems to have just been milk bc we don't see it this morning... Any advice???