I have back pain due to sitting in front of computer for long hours. Kindly advise.

Hello doctor,

I am a 27-year-old male. I was sitting in front of the computer for more than 10 hours per day for the past month. I have mild pain in my lower back, not constant pain. the pain is either left side or right side but on the right side is more time the pain always shifts its position. and while walking my right side bottom thigh got pulling pain at a step in and sometimes my lower limb felt pain. and I feel some weakness in the right leg while I sit I feel some numbness in my left bud and left bottom thigh. I have taken MRI and consulted the doctor, the doctor says the lumbar spine looks normal. I consulted a radiology specialist and she said the hip and sacroiliac joint MRI essentially looks normal. The lumbar spine has mild disc bulges causing radiating pain and numbness in the legs and feet described in detail below:

At L4 or L5 level: Mild posterior-central disc bulge is seen indenting the thecal sac and encroaching bilateral neural foramina (right more than left) compressing right exiting nerve roots and abutting left exiting nerve roots. The annular tear is noted at this level.

At L5 or S1 level: A mild posterior-central disc bulge is seen indenting the thecal sac without any nerve root compression.

So, I consult another ortho specialist and he suggested doing physiotherapy and exercise for 10 days now. I completed 14 days but I did not feel any improvement. Previously two months ago I have taken treatment for erectile dysfunction and the doctor suggests taking medicine for one month, but I took it for two weeks and stopped the medicine. I do not know of any side effects from the tablets. So please advise me to take proper treatment.