Today is my 5-6th Day After Rhinoplasty. Many People Said After Plastic Surgery Cannot Eat Seafood but I JUST ATE Crab?

Though it is good that you are exercising
caution during your recovery from your rhinoplasty, rest assured that there are
no dietary restrictions when it comes to eating seafood after your nose job.
Unless you are aware of any allergies, or are eating foods that are difficult
to chew and are thus providing unnecessary stress to your recovering body, you
should be able to maintain your normal diet during this time. My only recommendation
would be to avoid foods that have a high salt concentration, as salt has been
known to increase inflammation and swelling. 

There are no issues with eating seafood after rhinoplasty. In general, you will want to avoid foods that are hard to chew for the first week after surgery. I would recommend following up with your surgeon, as he or she may have specific guidelines for you to follow. I hope this helps, and I wish you the best of luck.

That's a myth. You can eat whatever you feel like after surgery, although it is good to start with a mild diet to make sure you don't get nauseated from pain pills, etc.