Hi, Thanks for asking. Based on your query, my opinion is as follows. 1. Whitish lump behind ear is a lymph node. 2. Due to infection, reactive lymph node enlargement has occurred. Swelling would take around two months to reduce. 3. Continue exercises as suggested for dizziness. Additionally, improve hemoglobin and check for blood pressure and hydration. If swelling persists beyond two months, fine needle biopsy may be necessary. Hope it helps. Any further queries, happy to help again.