About 2 years ago I connected swelling of my tongue and throat with eating soy. I tried going to allergy experts, but I tested negative for a soy allergy. This past year I was perscribed utrogestan, a vaginal suppository derived from soy. It caused me extreme pain and a burning swelling feeling. I also get the same feeling most of the time when my husband ejaculates inside me. He was off soy for about a week and the burning went away. Is it possible that his sperm contains the soy proteins and there's something the allergists missed when testing me? (They suggested it might be an enzyme deficiency)