Dark urine

So for a few weeks now I’ve noticed my first urine of the day is amber in color. Which I get can be from being dehydrated thru the night and I used to pee thru the night now I don’t. But still kinda concerned because this is new. I did a papsmear with blood work last month and was told everything was good in regards to having a possible infection, anyways today I’m kinda more concerned because during the day I had dark urine not as dark as amber. I will go to a general dr eventually but I just want to know anyone has any input? I don’t have any other symptoms I do sometimes get nauseous and have a headache but not everyday or every other day.