Hey, don't stress too much about a single test! Sometimes if you test too early it shows negative even if you are pregnant. Just wait 3 days and try again with morning urine.
I panicked so much when I got a faint line and thought something was wrong! But my doctor said it was just early days, so yes, they are right but timing matters.
Ugh, they are mostly accurate but if you test too early, they'll lie to you. Honestly, just wait a few days or go get a blood test done, pregnancy is tiring enough without kit drama!