Is my shoulder pain a disc problem or nerve pain?

Hello doctor,

I am working as a design engineer. I work more than ten hours per day in front of the computer. Last two months ago I have pain in my right leg while walking and irritating buds while sitting on the right side. So I went to doctor. He took magnetic resonance imaging (MRI) and says I have disc bulge L4 L5 and it presses the nerve root. The doctor prescribed some anti-inflammation tablet and take physiotherapy for ten days and take rest some days. I finished my physiotherapy and I do exercise twice a day suggest by the physiotherapist. I take rest in bed for one month, but my pain not reduced. I consulted some ortho specialist they said bulge is very small only no need to worry. Now I have some shoulder pain and nerve pain in my right hand. While sleeping I feel numbness in my baby finger and ring finger from the wrist on both hands. I am confused now is it the only disc problem or something nerve problem? I have taken medication for erectile dysfunction for two months ago. The doctor prescribed one month medicine but I took two weeks only later I scared of my leg pain and I stopped medicine.