I would send a private message to some of the long timers here. I have not had to have surgery since this experience, (thank goodness!). So I don't have an answer, but I know other people have had complications with anethsia.
As for whether you are ready, that is something only you know. If you are struggling with your 18 month old, think about potty training and a new baby. However, if you are handling caretaking just fine, than it might be something you would handle fine. You are the only one who would know. Perhaps talk to your doctor and your OBGYN to see what their suggestions are. That way you will have their opinions too. I do know that my nephew, who was born 6 months prior to my accident has been a Godsend for my depression when I am able to keep up with him!
What Happened: On 3/8/11 I was stopped waiting to merge into traffic when I was rear ended by someone doing 45 mph. I walked away from the accident, to fall into the pit of PCS 5 days later... (I have had 2 previous concussions, but neither developed into PCS.)
Symptoms: Physical: migraines, concentration headaches, dizziness, nausea, neck and back trauma (from accident), tinnitus, visual field deficits in left eye, extreme light sensitivity, noise sensitivity, EXTREME fatigue, impaired vestibular system, disrupted sleep cycles,
Cognitive: Brain fog, impulsivity, unable to concentrate for more than short periods of time without symptoms, word finding problems, slowed processing speeds, impaired visual memory;
Emotional: unable to handle stress or overstimulation without getting extremely irritable or angry, easily overstimulated, depression, major anxiety;
Treatment so far: Vestibular therapy; Physical Therapy; Vision Therapy; Vitamin Schedule; Limited caffeine; Medications; attempting to limit stress and overstimulation; Yoga