Developed A Lump On The Left Side Of My Neck

Developed a Lump on the left side of my Neck measures 2.3 x 1.6 after receiving the Flu Shot and Hepatitis B Shot on the left arm Before I had the Shot I had Fluid in the Inner ear.... Lump has been there a little over a week I'm extremely worried Doctor is requesting a Biopsy and a couple of Cat scans.