is it possible I have dyslexia?

I just remembered an example of my dyslexia (and THIS one I think IS dyslexia) that was hilarious at the time.

I saw an on-line ad for a snow shovel that had a handle that came apart in sections and I decided I just had to have one for the trunk of my car, so I called the # and told they lady that I wanted to buy one of their show snovels.

There was a bit of a silence and then she said, very uncertainly, "uh ... what ?"

And I, not being the most patient person in the world, say. YOUR SHOW SNOVEL ... I want to order one of your show snovels !!!

There was another silence and then miraculously, she and I both realized at the same time what I had said and we both broke out laughing and had a very nice chat after we caught our breath.

...a very broad term defining a learning disability that impairs a person's fluency or comprehension accuracy in being able to read,[1] and which can manifest itself as a difficulty with phonological awareness, phonological decoding, orthographic coding, auditory short-term memory, or rapid naming.

note: not a health issue

I've taken several online quizzes/tests and I always get moderate or borderline results. Reasons I believe I might have dyslexia:

1) I'm left-handed
2) I can't tell where sounds come from. In some occasion, I think they're coming from exactly the opposite direction.
3) it's sometimes really frustrating and takes a lot of concentration to read blocks of text.
4) I mix up extremes (example: I never remember whether high-viscocity is more sticky or more fluid).

It's not stopped me from succeeding in academia, employment, or elsewise, so it's not detrimental to my health, just a curiosity. Things like 3) and 4) above can sometimes make parts of academia painful, but I assume everybody struggles in some domain or another in that regard.

I don't see these as dyslexia symptoms. 2) you should get checked by a professional. 3) and 4) I do experience, but would put down to just tiredness or possibly aging. I say aging because over the years some of the issues discussed in this thread I experience more and more. Having to write down words to visually check the spelling, having a long think about whether I need to use seperate or separate, and so on.