@HelpMeHelpMeINeedARemedy You mention your husband has nut anaphalaxis. Could this possibly be why he lacks patience with the idea your symptoms are allergy related? We tend to set our baseline where we are, so if HIS experience of allergies is full on, throat closing up, system going into shock, will die without an epi-pen type reaction, then maybe he thinks it can't be a 'real' allergic reaction if you're just going a bit rashy and getting an upset stomach - of course he can't 'see' the throat symptoms and they do sound unusual and hard to describe, so he may just not be 'getting it' because of his own experiences? Not an excuse for him to be dismissive but definitely worth factoring in.
Another factor is the proliferation of self-diagnosed 'allergies', ranging from the severe to the 'ooh I'll bloat up if I eat that ice cream, I better not'. For a lot of people this has made them sceptical of any supposed 'allergy' that isn't swiftly verified and diagnosed by a doctor.
My baby daughter was a howling, miserable little thing from her first week until she was nearly six months old; she got better after that but still had awful bloating and bowel symptoms and was regularly 'spitting up' (at least once a day) until she was nearly one, and had repeated ear infections.
All the health practitioners I spoke to told me that's just babies; EVERYONE I spoke to in voluntary breastfeeding support told me she had Cows Milk Protein Allergy and to put her and me on a dairy free diet. I ignored them for the best part of a year because no doctor had said so, when I asked them they dismissed it, and why WOULD she be allergic to something most babies live on as a matter of course?
The week we went dairy free she was completely transformed. her little pot belly flattened out within a few days and felt soft for the first time ever; no more spitting up; no more ear infections. Slept better, was so much happier. I could have kicked myself around the world for being 'sceptical' for so long and putting so much faith in medical opinion when there was obviously something the matter with my girl whatever they said.
Definitely do an elimination diet and then reintroduce. Keep a food diary. Work it out for yourself if your drs won't help you. My daughter still has no diagnosis, but for me 18 months of her being dairy free, content, and thriving is enough for me.