Stomach or lungs (or intestines) did not occur to me consciously. I didn't think about this in advance. Your debunkings assume I just misremembered how it happened.
It wasn't selected memory. I asked my intuition for an answer, then it flashed to me. The answer made no sense to me consciously. I never considered what might be wrong, because I'm cold like that and don't care, I'd rather wait until the doctor says what the situation is, rather than hypothesize.
My first and only inquiry into the condition was asking my intuition.