Hello madam/sir, welcome to medical care magic.Tonsils when infected, its size increases and painful. It is just like infection on any wound in your limbs or else where. Later pus starts collecting.Also healing seen in the form of scars which are due to fibers deposition. All these happen in tonsils. These should be treated by antibiotics.Till these medicines does not reach a level where it can fight against infection, the pain and swelling does not subside.so it takes time to reach that level. The tonsil infections also spread to local lympnodes through a fulid called lymph. These lymph nodes swelling you feel as lumps.once the infection subside, the lymph node size also decreases. Take care. Good health