Home tests are characterized by high reliability (approx. 95-99%). A urine test will be most reliable if it is taken in the morning from the first urine sample of the morning.

It all depends on the time when the intercourse took place. Usually, urine tests are performed no earlier than about 14 days after intercourse or on the day of the expected menstrual period, because then the concentration of the tested hormone increases.
Other, more sensitive treatments can be performed about 6-10 days after intercourse. Check that the test is not expired and that it has been performed correctly.

A blood test can detect pregnancy earlier than a classic urine test, because the hCG hormone is first released into the bloodstream and then into the urine. The test can be performed as early as a few days after fertilization.

Here you can compare the prices of a blood test in online pharmacies and order for home delivery or pickup at the pharmacy:

https://www.gdziepolek.pl/produkty/8584/babycheck-1-wb-test-ciazowy-z-krwi-test/apteki

In cities such as Warsaw, Wrocław, Łódź, Lublin, Krakow or Białystok, products can be ordered with instant delivery even in 1 hour thanks to the Wolt Drive service - check if the service is available in your location:

https://www.gdziepolek.pl/koszyk/szybka-dostawa