Stavios how are you looking these days? Get a urinalysis and blood work asap. I think you are ok though same thing happened to me and everything was fine. Up your water intake. On the day this happened did you have unusually low amounts of water? I was sick of a stomach bug and couldn’t keep anything down so I was dehydrated when this happened. All parameters were in normal ranges by the time I got checked out.
I'm looking alright, I stopped chasing the dream of looking like a bodybuilder and embrassed the fitness look.
I don't like weight training that much now adays, i prefer boxing lessons.
I train 3 times a week and 2 boxing lessons a week.