Unilateral tonsil enlargement. Anxiety.

Hi, I was having pain in my right side ear and tonsil from 5 days, I ignored that first but one day while brushing I noticed my right ride tonsil was increased, and left side was mildly increased and also I am having excessive salivation in my mouth, And there was some swelling in my neck too, So I started Augmentin 650mg BD*5 days and got a CT Neck to rule out malignancy, Even after 5 days my tonsil size didn't decrease and my CT report stated that there were few subcentimeter lymph node in my neck. And my right tonsil appeared asymmetrically bulky. I am scared to death that It might be lymphoma. Also I have GERD can it be because of that too. And also I have suffered from CSOM Of my right ear when I was 4yrs old which got resolved. I have done my MBBS and currently doing my internship and this gives me even more anxiety.