Can earwax build up damage hearing? My mom was cleaning my ears out & I suddenly can't hear out of one ear. Any solutions? It doesn't hurt.  

Yes. There are 2 possible explanations for why you have hearing loss. Fist of all, depending on how your mom cleaned your ears, she may have pushed the wax further in and created an impaction causing hearing loss. Secondly, the cleaning process may have damaged the canal or tympanic membrane. Have your physician take a look inside and will know immediately which it is.