Can there be complications from a general anesthetic?

Yes: And they range from nausea and sore throat to stroke and death. Discuss your concerns with your surgeon and anesthesiologists. They will help you understand your individualized risk.

Of Course: Of course there may be complications from a general anesthetic. They may range from relatively minor (e.g. Sore throat) to major (e.g. Severe blood transfusion reaction). During the pre-operative meeting, anesthesiologists try to convey the plans, options and potential complications that are most appropriate to your health issues and the planned surgery. That is the point of informed consent.