You've been given some great advice already and it's always good to see the stereotypical views like 'if you can make eye contact and you have empathy you can't possibly be autistic' confronted for the rubbish that they are. Also remember that much of the diagnostic criteria is geared towards the standard male presentation of autism and as yet there's no female presentation criteria recognised internationally although the Lorna Wing Centre, Judith Gould, Daphne Keen and several others have made it their life's work to make inroads into that.
Anxiety is a "driver" for autism, the higher your anxiety state, the more likely other people are to notice your autistic traits. Also, autism rarely presents on its own, usually there are one or more co-morbid conditions. Sensory Processing presents so commonly with autism that it was included in the diagnostic criteria at the last review.
The internet is a great resource, but there's a lot of dross to plough through before you find information pertinent to your own presentation of the condition. Here are a few links I hope you'll find helpful.
Sensory Processing, this is the most informative booklet about SPD that I've ever read www.falkirk.gov.uk/services/social-care/disabilities/docs/young-people/Making%20Sense%20of%20Sensory%20Behaviour.pdf?
Explanation of the spectrum neuroclastic.com/2019/05/04/its-a-spectrum-doesnt-mean-what-you-think/
MN's SN boards are among the best I've read. This is the 19th support thread for neurodiverse adults www.mumsnet.com/Talk/mumsnetters_with_sn/3883677-Neurodiversity-support-thread-for-women-with-suspected-diagnosed-or-self-diagnosed-autism-ADHD-and-other-NDs-19
How-to of adult diagnosis both NHS and private www.autism.org.uk/about/diagnosis/adults.aspx
One thing about diagnosis, if you do go for one and are given it, then it goes on your medical record as Primary Diagnosis, which means that any treatment you're given should take that into account, e.g. if you were offered some form of talk therapy then it should be given by someone who knows how to communicate with people who have autism rather than the standard version for NT's.
Another benefit of dx is reasonable adjustments can be made at work if you need them.
Do remember that if you've met one person with autism, you've met one person with autism. No descriptions will feel as though they describe you exactly, because only your own individual profile will do that.
I think I'd be terrified of going to the GP I think. I'd be worried she'd laugh me out the door
Your GP shouldn't laugh you out of the door, (although some are woefully ignorant about autism) if you want to pursue a dx, then take some supporting evidence, the AQ score is a good one, plus any other observations you make when you've read about autism and think 'that bit sounds like me'
The only people you should listen to who definitively state you can not or do not have autism are people who are qualified to carry out the diagnostic procedure and have done so for you.
Anyone else including GPs, therapists, teachers/mentors, coaches, close friends, family, are not qualified to make a diagnosis so their opinion is irrelevant.