Overload and headaches

Hello,

   These last few weeks I've been feeling very overloaded. I haven't had a meltdown or anything but occasionally have felt close. I'm a bit better today, but does anyone get headaches when things get too much? I'm wondering if its because I haven't let it out or I try and tell someone and they don't understand or care. Its like talking to a brick wall. I would like to join a group when possible in my area to physically meet other Autistic people who would listen and I would listen too. Thanks