Yeah, hopefully RAST results will tell you very definitively
which allergen(s) you are needing to avoid.
Chances are good that it's either crustaceans or a particular class of fishes, but of course, this may not really matter given how cross-contaminated most sources of either one are with the other (I'm shellfish allergic-- at least this is what we think... it's possible that it's molluscs or something odd, but avoidance for shellfish seems to keep me reaction-free. Mostly).
Gloves may not be enough if you are required to be in an area where fish/shellfish are being
heated during cooking. I'd ask your doc for some guidance on that one if it seems to be a problem. Do you have asthma? Epinephrine injectors of your own? A medic-alert bracelet? You'll probably want the latter once you and your allergist determine precisely what needs to be on it. You'll want the epinephrine sooner, it sounds like. Also know that anaphylaxis
can present as 'just' a refractory asthma attack. Those kinds of reactions can really easily escalate out of control, since it's so easy to dismiss the early symptoms.
Unfortunately, you're also discovering (the hard way) that once you've anaphylaxed, your immune system remains primed for additional reactions (without much of a triggering stimulus) for quite some time. During that period of time, it pays to be exceptionally cautious. Many people find that this period of heightened response lasts for several weeks.
On the other hand, maybe that gives you some hope that what you're currently experiencing might be a temporary jump in your sensitivity. On the other, it doesn't much matter unless you can avoid well enough to quit reacting to begin with.
Glad you found us, by the way.
I forgot to say so earlier-- but-- a warm welcome to FAS.