Both of your questions are answered by utilizing the forums Search button, as they have been addressed and answered many times throughout the DT forum..

I can see the faint line here but I read somewhere that the rule of thumb is "if it can't be photocopied it isn't a line"??
Do an Advanced Search with the terms "photocopied line"

My next question is why first of the day? Is that when the concentration is strongest? So if I got a line on my first void of the day, I'll definitely pass on my other voids?
Do an Advanced Search with the terms "first urination worst case scenario"