Can I take zerodol th 8 for 2 more days.

I suffered from muscle spasm which maybe due to pulled muscle during workout.After that I used to suffer pain in back and abdominal muscles during movement.I consulted doctor who recommended me taking zerodol th 8. After taking it for 8 days I  recovered mostly but still if I sit down for hours for office work I feel slight discomfort/pain in abdominal/back muscles.The discomfort/pain is gone in few seconds after I lie down.Also rarely I feel slight discomfort in forward bending.Doctor advised me to take rest but on working days I have to sit for office work.I have not done any workout for last three weeks and it's around 10 days I have stopped taking medicine (zerodol th 8) but still not able to overcome this minor discomfort/pain. It feels like there is slight weakness/strain still left in my back/abdominal muscles . Today I started stretching exercises to overcome muscle weakness. Should I take zerodol th 8 for 2 more days?