feeling alone

hello everyone, I was wondering whether anyone else was in a similar situation to me...I am a single parent and sole carer to my 12 year old son, who was diagnosed with ADHD when he was 8 and with ASD when he was 9...for his ADHD he takes medikinet and he sees a consultant at CAHMS periodically. With regard to the ASD,he is high functioning and goes to mainstream school (there have been a few issues re bullying but that's down to my son overthinking things..). I used to get a bit of help from family in that they used to have him for a few days every now and again but that is no longer the case as they have told me they wont do this anymore...anyway, on top of everything, I have recently been diagnosed with fibromyalgia and am currently undergoing further tests to rule out MS....I need respite, I have tried applying to my local council/social services but they don't seem to want to help me...I feel quite alone and don't really know who to turn to or what to do for the best....thanks in advance of any advice...