Hi and welcome to the Chiari forum.
If you are looking for a support group to go to where you can meet in person....I am not sure where in your area they might be.....but we are here and can help with the same info.
I can say I can relate as I know most others friends/family thought I was either making up my pain or exaggerating it....even Drs I met were not sure of my complaints....and I began to doubt myself at times.
My surgery for Chiari was back in '09 so I can offer you insight as to what I went thru, you may have a totally different experience that I did, so I can not say this is what will happen to you...but I and the other members here can share our journey and offer ways to help navigate this condition