I really sympathise with you, it took me over 7 years of actively seeking answers and numerous doctors to get a proper diagnosis. Firstly I would make a formal complaint about this doctor telling you that you should be glad its not ra, is unhelpful and patrionising. I would then go to your GP or another gp if you are not getting anywhere, and say that you have made a formal complaint and you want to be referred to another hospital. I know you are entitled to do this in england, am not sure if the rules are different in scotland. Always make a list of things you want to say to your gp/dr and be firm but calm and polite. Can you bring a family member or friend for support.
Have you got an offical diagnosis of HMS and are just looking for more support?. Tell your gp why you want to see a specialist in HMS, how its affecting you and what you need help with. I think there be a list on here of doctors who specialise in HMS and they look at the whole body system which is what we need, as you can't control the pain if your so dizzy/sick that you can't exercise.
Don't give up. I had a really bad experince with a vile rheumy doctor and he made me so angry and determined that I made a formal complaint and asked GP to refer me to another hospital. From then on I was taking a lot more seriously. Although it did take a year to see a specialist in HMS, it was worth it. So yeah sometimes you do need to make some noise, don't let yourself be bullied.
Best of luck

