Laura
With that kind of reaction, you are better staying away from that type of seafood, and any other of it's kind...for good! You would not want to chance that you could have a worse reaction and go into anaphylactic shock. This could lead to severe brain damage or death....food allergies are very serious! I would also consider if I were you, getting a prescription for an epi-pen...it's a shot you can keep with you, should you ever have a reaction to something and develop severe symptoms! Check foods carefully, especially on buffets, etc. Be careful!!