Female 67 years old. Should I get assessment?

Hi

I am trying to decide whether to get a formal  assessment or not.
Due to a number of events and conversation, I have reviewed my life and taken some online autism tests. In the tests I score highly. I have been shocked by how high, but I have a distrust of online tests, even though I believe I have only used ones which are offered by reputable groups with academic backing as far as I can tell.
I am 67 year old woman. If I was 20 years younger, I would definitely get tested as a diagnosis can help in the workplace. But, I am now retired and I can't help thinking that the meagre resources available should be used by those who will get the most benefit - ideally children. I have considered a private assessment but I have only seen 4 figure sums quoted, which is more than I can afford.
A diagnosis of autism would explain some character traits and a number of the difficulties I have had in life: accusations of being abrupt, finding social situations and making eye contact difficult, having hobbies, activities and interests that I focus on obsessively for a time, liking patterns which led to a love of Mathematics, being a "loner", disliking certain food combinations (e.g. custard and ice cream), meltdowns etc. It could also help with my mental health (hospitalised - including 2 sections - 4 times for extremely severe depression and anxiety + social care) and the type of support I get.
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