Pregnancy test, HELP!?

Im afraid i might be pregnant. Ive had unprotected sex a couple times for olden times 2-3 weeks, im on birth control, but im afraid it hasnt been affective. So I bought a first responce prganancy exam and it says it detects it up to five days up to that time your missed period. I own no idea how this pregnancy interview works it tells me how to pocket it and everything but im afraid i might be taking it at the wrong time, and all it say is "detects it 5 days sooner". And so i really need some info. Can anyone sustain? I hope I don't have to hang around to take it, because im really stressed out and i would kind of approaching to know right away..
Answers:

Period 10 days late, medication or pregnancy?

The earliest that the question paper will confirm a pregnancy is 5 days before your subsequent expected period. Let's influence that your period is due this month on April 10th, you could audition on April the 5th.

To test purely either put 3 drops of urine in the tester or put the stick in your urine stream for 10 second or whatever the instructions read aloud.

Hope this helped