Struggling with new diagnosis.

I hope this is the right place to post this.

I was diagnosed with Autism in the summer. After years of seeing a psychiatrist t and being various mental health diagnosis that just didn't quite fit me (bipolar & a personality disorder) my psychiatrist finally referred me for an assessment for autism. I passed that one with flying colours and was told there and then that I was autistic. I was then also told that there wasn't any real help my local authority could offer me as I was an adult. They gave me a bunch of leaflets and I was told that's all they could do to me after the initial assessment. 

I have to admit a lot of things made sense and felt like they 'fitted me' that we hadn't really thought about before but when they were brought up mainly in the session that my Mum had where she was asked a lot of questions I originally felt help with the diagnosis for once I was being told I had something wrong with me that actually felt quite right. 

Fast Forward a couple of months. I'm 37 and I still live at home with my parents. I depend HEAVILY on my Mum who helps me with most things in life (she's now realised she doesn't have to tell me to put a coat on when it's cold outside and can accept i'm warm enough in a t-shirt!)  A few months down the line from my diagnosis I just feel completely lost. If I search anything online to see if my autism could be at the bottom of it it's all about young children. I've been diagnosed late on in life. I'm female, part of the forgotten group apparently but as I said I just feel so lost. My family/friends have embraced how I am and my older sister especially now has more time I feel for my 'quirky' ways. I just wish I could get some help for me and for my Mum. I feel like i've been thrown into some water and its sink or swim time. And right now I'm struggling to stay afloat. 

I have obsessions and they feel so intense at the moment and I don't know if that's my autism or just part of my mental health. I do suffer from obsessions new and old. And when I have a new one they can feel so so intense they actually make me feel quite unwell because I feel really anxious with them. I don't know if that's the same for anyone else, My head is constantly on the go I feel I get no peace. The only time I can completely shut off is when I go and play football (on my own) that's the only time where nothing else enters my head and I feel truly relaxed and happy. 

I don't sleep well at all - I've been put on Melatonin which is starting to work. I just feel like I'm existing at the moment and not living. 

I'm just looking for some advice really. I hope this makes sense to some of you because it doesn't always make sense to me!

Thanks!