Biting?? And lightheaded?

charpe

I'm new to this board from S13. DD was born 9/11, and just got her first tooth. The last several times I've BF, she somehow manages to bite with her one tooth. Holy hell does that hurt!! I can't imagine when she has more than one tooth. How does one train a 4 month old not to use teeth? (Or tooth in this case?)

Second question, I returned to work this week and I'm pumping every 2.5-3hours. I do not have any supply issues, but now every time I pump, I get very lightheaded. I've tried extra water, snacks, etc. any solutions??