You can tell if you're pregnant two or three weeks after unprotected sex.
You will be able to know after 2 weeks.
Soon as you feel your body changing
How do you know you are pregnant in the first place?
Even if you are breast feeding and you do get pregnant , you can know by the morning sickness and the urine test report if you are pregnant or not.
as soon as you know
About 6 days.
You can take the test 10-14 days after sex.
When you do the ultrasound they see it.