Your diagnosis is primarily for you - to understand why you are like you are, and to enable you to find coping strategies. It is not validation- it does not make you right, or the person who has to be accommodated all the time.
It may help those around you understand why you are like you are, but for most of them nothing has changed, and it may even look like you are a bit self obsessed to keep going on about it or or expect everyone one to want to read about your condition. You are not your families special interest or hobby. You might find it fascinating but they are not likely to. Imagine if a friend with say, arthritis, sent everyone articles about their condition and expected you to swot up on it.
Everyone is different, and everyone, even those of us without a label, finds certain things difficult. You might find it helpful to have a think about the difference between difficult and unbearable activities, and find coping strategies for the former so you can be more flexible when other peoples needs and desires come up against your own.
Its very hard to feel lonely and misunderstood, but the way out of this is to meet people halfway. If you try and do this you may find the people close to you appreciate the effort you are making and become more accommodating of the things that are just not possible for you. Even if they don't you find that they find you easier and more likable, and want to do things with you more often.