Hi I am a lactation consultant. You may take an online consult to start with.
More likely, there would be some correctable error in latching.. big breasts dont matter in feeding. Only thing is, shape and structure of nipple and areola must be fine..
Next Steps
take a consult as more history is needed to tell correct solution
Health Tips
do not lose heart.. be determined to breastfeed only.. every issue you have can be managed.