there is a high probability that your child is having ear infection which might be either external or internal so visit your doctor immediately because ear drops along with antibiotics may be required to decrease the infection and a medical examination is very important in this case and for ear pain you can give paracetamol for the time being and prevent any water to enter the ears

Did u put oil in the ears during massage ? Get her ears checked by a pediatrician/ENT! Do not squeeze the nipples those lumps are usually nothing to worry about . Squeezing the nipples may cause abscess to develop leading to swelling .

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Your child has ear infection. Avoid oil instillation in ears. She will require oral antibiotics.