Beta, always check with the very first urine of the morning, that is what elders have always advised. Don't drink any tea or water before testing to get the correct result.
First morning urine is always the best because the hCG hormone is most concentrated then. Try to do it right after you wake up for the most accurate result.
If you have a busy morning routine, just keep the test kit in the bathroom the night before. Do it first thing when you wake up so you don't forget or dilute the urine by drinking water.
Definitely use the first morning urine, right when you wake up. I remember doing mine while struggling with early morning nausea, and it gave a very clear positive!
I panicked because I did it in the afternoon and got a very faint line, but when I repeated it next morning, it was a solid positive. First morning urine is definitely key!
Use the first morning urine, simple as that. If you test in the afternoon or evening, you might get a false negative because the urine is too diluted from water.