masturbation effects

Hi!
I am 22 and just moved to London for studies basically i am from Pakistan. I never had sex with anyone in my whole life but I have been masturbating since 15 years irregularly, I mean first 5 years on daily basis twice a day then next five years may on one day after basis and then last five years almost twice a week. I sometime used hands to perform it but mainly I always it by rubbing my penis onto pillow type soft things. Whenever I performed masturbation, I prolonged it for 3-4 hours at each time I did it.
Now I am suffering real bad results. My marriage is going to be fixed soon and I am so much tensed and worried about my current situation.My studies are being badly damaged unable to concentrate on my studies.even i did,nt want to eat .My physical appearance is just going worse and worse. I totally consider my self incapable to have sex with a girl.
Please help me and suggest me the best remedy which really can cure my problems.
My current symptoms are as follow:

Premature ejaculations
Eyes are sensitive to sunlight right after the night when I masturbated
Cold, thin and odourless semen
Erectile dysfunction (weak and incomplete erection), even at the time when I masturbate
Curved, flaccid, withered, thin and small penis, also veins are prominent at each side of penis
Withered, hanging and flaccid testes (scrotums)
Loss of amazement at the time of ejaculation
No specific urge to sex
Seldom, dribbling after urination
Seldom, knee pain
Hair falling but not so much
Body is not muscular
Not much power remained to lift weight ,always feel laziness and didn’t want to do any work.life become boring and meaningless

Please also tell me that medicine which you will advise me from where i get them here in London.
thankyou