No, since you have tak n it 20 days ago. But in any case you have pregnancy then yes your urine or blood test can confirm it that whether you are
pregnant or not.
Next Steps
you can get your urine test done at your home by any of the kits commercially available at pharmacy like prega news or something like that. if it is negative then no issues go ahead for any test.
Health Tips
plz take precautions for unprotected sex