Heavyness filling on left upper outside.

Hello Doctor Good morning. I have feeling of heaviness on left upper middle ear lob,outside only from last 15/20 days. Earlier I noticed it for few seconds then it subsides. After that frequently every alternative day and now almost most of the time am feeling heaviness and some little itiching sensation inside the ear also. I don't know what is it and I never had this before. I am a Diabetic person since 5years,taking matformin,500/2×day and voglibose.3mg/2×day. Am having hypothyroidism also taking 50mg tab daily early morning. Having Arthritis problem with joints but not taking regular medicines of it. Will appreciate if you can able to diagnose what is this new symptoms and is it serious? Can I bear it for another 4 months? As am in USA now,will be back on in early June 2108. Please help and.guide me. Thanks and best regards Asha Garekar.