Can I sue if my baby had bruising after the delivery?

If you are interested in any reasonable chance of having an attorney pursue a claim for damages for you then you'd better get and honor an opinion by another delivery surgeon.

It does not appear that you have a case in this instance. Even assuming you have a case, it is not worth the value given the cost of prosecuting case against a medical doctor.

Even if that was below the standard of care in the community, the money damages are so small that it clearly is not worth while to sue [medical malpractice suits easily can cost more than $50,000 to pursue and Dr.s will not authorize their insurance carrier to settle unless liability is clear and the damages significant.

Of course you can sue. However (thanks to the doctor lobby) Med (and Dental) Mal cases are quite difficult. First, one must obtain a certification from an independent doctor that there was negligence. This is where the claim usually stops, as most lawyers will expect the client to cover the costs of this review/report(up to $5,000). Next, most malpractice insurance policies have a provision for approval of any settlement by the insured doctor. That doctor, human nature being what it is, will often refuse to approve any settlement, as he doesn't think he did anything wrong. Finally, there is a cap on how much can be awarded for pain and suffering, thus making these cases unattractive to lawyers. There are lawyers who specialize in Med Mal; your local bar association may be able to refer you to one.