No signs of ear infection until its bad!
Neither of my kids have ever complained of ear pain. Always a general malaise and by chance I've discovered them through a check up.
My daughter had a cold. Acting fine. Then woke up one morning with blood coming out of her ear.
She said it felt full. Not painful.
Her eardrum had burst from a bad infection. Wtf.
She still didn't know. No swimming for a bit. Silly putty in the ears.
Hearing back in full. All good. But I told her. The second something feels weird. To tell me.