6 weeks after L5-S1 microdiscectomy.

Hi, I am post 6 weeks after my L5-S1 minimally invasive microdiscectomy surgery. I am feeling better and have some soreness/cramps in my muscles esp. in the hamstrings and calf area. If I walk for some time I have some soreness in my lower back. Other than walking I am doing nothing and no physiotherapy yet. My doctor told me that I can start driving carefully after 1 week but I haven't tried since I was afraid of the road and traffic. I was restricted to do bending, twisting and sitting more than 30 minutes but it was not mentioned till when I have to restrict myself. I am following the same pattern from day 1 post surgery except there is some increment in walking distances. I want an advise on when I can start my normal life (excluding exercises) which will not have an impact. Also I am rejoining back to my office after my 8 weeks post surgery. So please advise on the do's and don'ts at this moment. I am 94 kg male with moderate physical activity before surgery.