IBCLC (International Board Certified Lactation Consultant): For any persistent breastfeeding pain. They can observe a full feed, assess latch and baby's oral anatomy, and differentiate between causes. This is the first call for most pain issues.
Your OB/GYN or midwife: For suspected infections — mastitis (fever, red streaks, flu symptoms), thrush (burning pain, shiny nipples), or bacterial infection of cracked nipples. You may need antibiotics or antifungal medication.
Pediatrician: If you suspect tongue tie is contributing to latch difficulties, or if baby isn't gaining well due to inefficient transfer. They can evaluate and refer to an ENT or pediatric dentist if needed.
Dermatologist: If nipple pain is accompanied by rash, scaling, or eczema-like changes that don't respond to standard treatments. Nipple dermatitis is underdiagnosed and very treatable.
The biggest mistake parents make is waiting too long. Pain in week 1 that isn't improving by week 2 won't magically resolve in week 3. Get help when the trajectory is wrong, not when you've hit your breaking point.
If tongue tie is a suspected cause, our tongue tie and breastfeeding guide covers evaluation, diagnosis, and what to expect if revision is recommended.