How can you tell? I'm extremely afraid of it and I'm always anxious, I've caused my own nausea many times from this. I might have caused it before and had a stomach ache so now I'm convinced that I'm sick, (I always do this) and i have a tightness in my throat. I feel just not in control and a sense of panic. I tried to eat cause I'm hungry and as soon as it went in my mouth I felt nauseous for a moment before swallowing. Now it's not so bad. I get these weird throat sensations and I think I make myself feel nauseous from panic