I'm wondering if I should see the doctor again, since it seems like he has developed an ear infection in his right ear even though he is already on antibiotics.

It may be a good idea to consider consulting a doctor again, especially if the ear infection seems to be getting worse despite being on antibiotics. It is important to monitor the child's symptoms and if they worsen, seeking medical advice is recommended. Additionally, trying ibuprofen as an anti-inflammatory medication for 48 hours could potentially help alleviate the discomfort. We hope this information is helpful and wish the child a speedy recovery.