Doctor's Medical HELP...

Hi..!My guinea-pig , has had an ear infection for almost 2 weeks now .! Ah.! What is aproblem.? I am taking he to the dr and they are giving he Pills for it but nothing seems to work ! ? He only getsthese ear disease this time of year.I was wondering if anyone else has had this problem and what you did to solve it. I've suggested to put ear plugs in ears when she is around water to keep water out of her ears to see if that helps but she will not do that.I would appreciate any help. Best Regards..!