How do you know that you are pregnant?

At first, i didn't want to get my hopes up that i was pregnant - my period was 2-3 days late (but because my period usually is late, i didn't want to check). I realised that i was so exhausted for the past 2 weeks even without doing anything and i was more sensitive to the smell around me just like when i was pregnant with my first born. Then i decided to check, and voila. Double line 😂