That sucks, esp. the shell fish. The only food I've ever had an allergic reaction to was strawberries, but that was a lot of strawberries (u-pick farm) eaten at once way back when I was a little kid. I eat them now and seemingly don't have any problems with them. I am finding as I get older I more easily get nauseous from eating too much. I can no longer eat a ton of pizza, or any other unhealthy food, and not pay a price for it - heartburn too. It kind of sucks because sometimes you just want to eat a ton of pizza even if it's not good for you.