Is it normal to have bladder pain after an appendectomy?

Yes: Yes in one hand they place a foley Cather in your bladder while you are asleep and that will cause some bladder pain after. On the second hand if the appendix was ruptured and or the inflamed appendix was close to the bladder ,and or the bladder was part of the inflamed mass because of the appendix the patient will have a bladder symptoms

Get checked for UTI: May have bladder infection due to catheter or may be bleeding around LLQ trocar site. See surgeon ASAP