|It's probably me just being silly lol.
No, it just shows that your intuitive mind is working as it should.
Your logical mind will always think that anything which is illogical is silly.
The bad feelings which your mind seems to be associating with the number 17 are probably in the end going to turn out to be more useful than the number itself in you working out why you constantly encounter it.
Also be aware that since your mind has become conditioned to see the number 17 in many different situations, it will then conveniently ignore any situation where a 17 is not present. Selective perception?
It (your mind) will be looking out for number 17s wherever they can be found, in order to explain how you feel at the time.
This is therefore not a simple cause (the number 17) and effect (bad feelings) relationship.
Sometimes the bad feelings can precede or come before the number 17 actually appears.
Interesting, but still very frustrating when you cannot work out which of the two came first.
Like the chicken or the egg.