Possible complications of the disease : Permanent / Temporary hearing loss, balance problems, facial Nerve damage, intracranial problems like brain abscess etc.
Can you delay the surgery : Yes, of course. However any delay can possibly lead to complications along with the surgery becoming more difficult and less optimal results. Your ear with the relevant investigations need to be evaluated before a definitive answer can be given.
Next Steps
Get an evaluation from an ENT
Health Tips
Keep ear dry and avoid ear buds