Hi Maiden,
Its possible you might have a few things going on here, but the majority of what you are describing sounds like fibro. Your thyroid could also be causing a few of your issues, particularly the hot and cold problems while indoors. I have fibro and inflammatory arthritis (RA) and have most of your symptoms to some degree with the exception of eye pain. The light sensitivity is horrible particularly with flourescent lighting in stores and I also get the burning, tearing , blurry stuff.
Pain can make you not yourself, hopefully your family understands your issue with that. Find some help with that if you think you need it, it seems to be quite varied on what helps each with fibro. For me anti inflammatories are the only thing that helps the pain. Have you looked at the fibro board? You might find some additional input there.
Best of luck in your search for answers, feel better soon.