When to worry about low milk supply with postpartum thyroiditis

Postpartum thyroiditis is inflammation of the thyroid after birth. It can cause a phase of overactive thyroid symptoms, an underactive phase, or both at different times. Changes in thyroid hormone levels may affect energy, mood, milk production, and how feeding feels, although low supply also has many other possible contributors. Look at the whole feeding picture: swallowing during feeds, wet nappies, alertness, weight checks, breast comfort, and pumping or feeding patterns.

Arrange a review with your maternity, primary care, or thyroid clinician and ask for thyroid blood tests if they are indicated. A lactation specialist can observe a feed, check positioning and attachment, and help protect milk production while the cause is assessed. Offer feeds responsively and avoid adding supplements or herbal products without advice. Keep a brief record of feeds, expressed milk, nappies, and your symptoms so the team can see trends rather than one difficult feed.

Seek prompt help if your baby is unusually sleepy, has fewer wet nappies, feeds poorly, or is not following expected weight checks. Contact a clinician urgently for severe palpitations, chest pain, fainting, confusion, marked weakness, or thoughts of harming yourself or your baby. Arrange assessment for persistent low supply, severe fatigue, tremor, heat or cold intolerance, constipation, or a racing heartbeat, especially when several symptoms occur together.

Could thyroid changes be affecting feeding, and which tests are appropriate? How will results guide treatment? Can I continue breastfeeding with the recommended medicine? Who can assess my baby’s intake and help with attachment or expressing?