Can I sue my doctor due to my sufferings that he might be the cause?

You need to file a claim for worker's compensation benefits that cover temporary disability benefits , ongoing medical treatment and a settlement for permanent disability and future medical care.

No you can't sue because someone "might have" injured you. You can sue IF THEY DID injure you. However, since you got hurt on the job, you probably have a workers compensation case. You need a comp lawyer.

I'm not sure but you'll need a second opinion from a Board Certified Doctor in the same field of practice (ie. Orthopaedic, Neurologist etc...) as your treating doc. He will have to certify in writing that you received less than the normal standard of care resulting in your injuries.

You would need a lot more to go on. First, in your question you state that he "might" be the cause. "Might" is nowhere near good enough, you can't even get into court with just that. Next, there is the question of how badly injured you were in the first place, there is only so much that medical science can do. Finally, you have to prove that your doctor failed to conform to accepted standards. A bad result is not enough, and if he made a legitimate judgment call, there is no malpractice, even if he made the wrong call.

You would have to prove the doctor violated the standard of care, and exacerbated your damages. Very tough case. Your remedy is workers comp.