Breastfeeding

Hello ladies so lately my daughter has been pulling back from my breast and when she pulls back she cries and then pulls back to the breast and starts to feed then pulls back and cries she does this until she gets I guess comfortable and finally eat but I’m confused I don’t know what to do because she be teething is she not getting any milk out of me I’m sure you’ve breastfeeding mommys understand me I’m starting to worry