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 theres something the allergists missed when testing me? (They suggested it might be an enzyme deficiency)
Any test is not showing 100% efficacy. It might happen that though you have soy sensitivity test might be negative. It is called false negative. Your complaint suggest that you are suffering from soy allergy. So, without going details in investigation, you should avoid soy containing food. Regarding the second part it might be possible that some proteins of soy will be there in semen. As semen consists of proteins and other elements like sucrose etc.