What to do if I didn’t get any stamp when I entered Poland?

If you are a person covered by the Act on assistance to Ukrainian citizens (see here), your entry into Poland has not been registered during the inspection, then you can Register by submitting an application for a PESEL number. You have 30 days to do so from the date of entry into the territory of Poland.

Legal basis: The Act of March 12, 2022 on assistance to Ukrainian citizens in connection with an armed conflict in the territory of that country (Articles 3 and 4).