Thank you for posting your query at DoctorSpring.com
You are suffering from tinnitus and fullness in ears. Following course of azithromycin and prednisolone you have vibrating sensation which worsen on lying down. Insomnia may be due to steroid. You do not have tinnitus now. How frequent you have vibrating sensation , how long it last. Any surrounding vertigo, nausea or vomiting.
Most likely you have problem of balance system of ear. You need a hearing test and other neurological test including ENG, ECog can be done.
Your symptoms are not suggestive of any allergy or lymes disease.
Hope this helps
Dr. Sunil Jalan