food allergy

I must be having some kind of a food allergy. I have had some hives appear on my back, thighs and arms. It must be the shrimp I ate. I have never had an allergic reaction to shrimp, but Tim thinks it could have happened because of some toxins or bacteria in the shrimp. Apparently the shrimp weren't cooked thoroughly. Sad, since I cooked them myself. I'm waiting it out, but if it doesn't go away quick I'll have to go to the doctor. And on the weekend, it would have to be the emergency room. So, I'm hoping it'll resolve itself by tomorrow. I don't really feel any other symptoms.