Yes, that is quite normal. You are stressed, worried, and afraid for your relatives who have remained in Ukraine. You have probably arrived in Germany after a long flight, and you may feel lost and exhausted.
In the 5-minute video "Psychosocial Support for Refugees" produced by Refugio Munich you will find helpful tips on how to remain stable and able to act in the current situation. The video is available in Ukrainian and German.
At bdp-verband.de, you will find short exercises that help you to relax. The course of the exercises is described in German.