Hi ! Nice to meet you all. Looking for some advice?

Hi there nice to meet you all, 

I've recently thought about my life in the past and present of how I deal with situations, sensory, social interactions etc and they all tick the boxes of autism and maybe a bit of ADHD. I'm 27 and looking at how to start getting a possible diagnosis?

My sister who is 24 has had autism since she was very little and when I've communicated with her I feel like she 'gets me' on a personal level through autism if you get what I mean. The way she acts and sees life is the way that I see it, I must admit I'm not at the same spectrum level as her but I've always felt inside personally that there's something just not right, my symptoms started when I was around 14 in high school is when I started to REALLY notice my actions, particularly behavioural. I'm unsure of how to word the rest but it feels like autism crossed in with ADHD. I've never been able to stick to a job for more than 2-3 months, I've never had a job where it's been permanent and that I enjoy. I also struggle to find hobbies that I'm interested in, the only one I have and ever had is gaming, and everything else bores me. I've been on UC for quite a while on LCWRA, not worked for around 2 years. (I live at home with my father). I also suffer badly from anxiety and do not want to leave the house for anything.

I have had trouble with GP in the past so I've sent a self-referral letter to my local autism centre place who deals with the assessments (can't remember the name but it is in South Wales UK). As I can't afford to go private either.

Any help, advice or even just someone to say that it sounds like I have or just so I know I'm not crazy will be a big help. 

Thank you,