Suggest Ways Of Enlarging The Penis

Hi Doctor,
My name is sameer & i'm 23 years old male from India.
I was affected by polio & my right is 1 inch small.
I have the habit of masturbation.
I have been masturbating from almost 9 years.
After masturbating i get tired & i get pain in my right leg.
Nowadays whenever i masturbate i get pain in my back & i get pain in my veins.
Please suggest me a remedy for this.
Also, i have another doubt.
My penis measures 5.5 to 6 inches.
Is it possible to enlarge the size & girth of my penis?.
There are so many products available for enlargement.
Are they effective?.
Will it harm my health?.
Kindly do the needful.
Regards,
Sameer