Yes eye power still ok, just checked at clinic. Power is the same as few years ago and my glasses are still comfortable.

No smell, pee is just normal. However I do have on and off diarrhea sometimes.
What type of STD could this be though? I don't have the regular STD symptoms like pus on my penis, sores or bumps, odd smelling discharge etc.

Personally I'm not a coffee / caffeine person. I'm feeling much better already, just more rest and drink more water, took couple days off work.
Thank you for the diagnosis, will go and check my spine with a chiro. Now I'm feeling back to normal again. Most of the symptoms gone, could just be a non-feverish virus infection.