Sudden hearing loss with giddiness needs to evaluated and treated on urgent basis as delay in treatment can lead to permanent hearing loss. You need to undergo audiological evaluation such as PURE TONE AUDIOGRAM, if hearing loss is confirmed then you need to be started on a course of steroids for week or more. If everything fails then you may need to undergo intra tympanic steroid injection procedure
Next Steps
Do not delay and consult nearby ENT specialist for confirmation of diagnosis and appropriate treatment