Is an official assesment beneficial?

Hiya! 

New here, I'm Lynsey

So I'm 29F and thinking more and more over the years that I may be on the autistic spectrum. I've sat and compiled a list this evening so definitely thinking a lot more seriously about it. 

I guess what I'm wondering is if going through the process of an assessment is helpful. The thought of going to my GP is very overwhelming but would do it if I thought it could help.

I'm curious if anyone out there has found that it benefited them.

So the questions that I have are:

How was the assessment? Was it hard to be taken seriously as an adult?

Did the outcome make it easier to navigate life? 

Did knowing the reason for certain difficulties bring comfort/understanding?