Pregnancy Test

Hi, Tanong lang po Ilang beses po ba dapat mag try ng PT para malaman kung accurate yung result? Since naka ECQ kasi di pa ako makapag pa check up. Im 3 weeks delayed already and when I tried to do PT 2 lines po siya wc is positive diba. Pero accurate po ba talaga yon ? Thank you po in advance sa sasagot. Stay safe everyone. ?