I have it secondary to 2 other conditions which are migraine and M.E
You will probably need to educate your Dr on it as many have never heard of it. I live a very quiet existence. When I was diagnosed when in hospital for migraine, it was my neuro who explained what it was to me and got his secretary to send me info.
I forwarded the info to my brother and the first words I got back from him was "I am SO sorry, for all the distress I caused you growing up"
Every family mealtime was a battleground with me, my mum didn't wear her teeth so wasn't a problem, when he ate always seemed to hit the fork/spoon off his teeth which would cause me to meltdown and even from a very young age most of my pocket money was spent on buying plastic cutlery to try and get him to use it with me.
Occasionally a fork would screech around a plate and I would lose it completely often running out of the house, up the lane (about 250 meters) and lying in the field across the road crying hysterically for up to an hour.
He was often sent to come and try and calm me down but when I was in meltdown mode, he would have to sit on me as a means of calming me. He is 7 years older than me.
Over the years I have dealt with stuff like this by wearing industrial earplugs which I can press a small button on to listen normally when trigger sounds aren't expected.
When the neuro diagnosed me I was crying and sobbing and my body was trying to thrash but couldn't due to paralysis.
He asked what was wrong and I explained thru tears it was the other patients eating lunch, knives hitting off forks, forks hitting off teeth and plates, the lids for food clattering off the trolley was setting me on totally meltdown mode and had been noted by staff but they had no idea why,
As he was the consultant who was in charge of my stay, it was mentioned in passing to him that I was on the verge of meltdown esp at mealtimes and that led to my diagnosis.
I then went off the ward with someone during meal times and my meals were held for me so that I avoided all the clatter and other patients eating. They also gave me plastic cutlery for my own use.
For a quick self-assessment misophoniainstitute.org/misophonia-test-do-you-have-misophonia/
If you do get the diagnosis, I attach a card which is handy to have printed and laminated
Best wishes