Welcome in H.C.M. for consultation.
I have gone through your query regarding itching, pain ,and heaviness in left ear, you have taken treatment from GP in the form of Amoxil and diclofenac
for 5 days , i this way you got some relief but heaviness in head and dizziness
is still persisting.
considering your symptoms I am suspecting that you are suffering from acute otitis media
. your feeling of water inside the left ear is really exudate in middle ear of left side.
As far as treatment is concern you should take- Antibiotics, anti inflammatory, anti histaminics, decongestants and steam inhalation and anti vertigo drugs like cinnergine. this will take 8 to 10 days for complete recovery.