Help!

Does timing make a big difference on these?? I took one this morning that was almost positive looking. It wasn’t first morning urine. I peed, waited a while and peed again without even drinking. Was that dumb? Then this afternoon I took another test that looked less positive. I stopped drinking, peed, waited 2 hours and tested.

What is the right way to do this? It isn’t exactly easy to be concentrating on peeing and drinking at the right times and then trying to pee in a public restroom while working full time and wait there for 5 minutes for results. This is so frustrating!