Ladendiebstahl. Shoplifting 20euros jewellry

Hello lovely people!
First of all i want to thank you for taking your time helping me
I am 22 years old studen from non-EU country. I am studying in Vienna. Unfrotunately, I was caught shoplifting in Müller. It was around 20 Euros worth jewelry. I paid directly 100 Euro in the shop itself and then the police took me to the station, took my photos and finger-prints. They let me go home after this procedure without telling me to wait for 'Brief' or so on. I am flying to my country in 2 weeks for the whole summer till September. Is it possible that I will be called for Hearing or any kind of Process because of 20 Euros? What will happen if i will not be there by the time i get the letter from the court? Will I get a letter at all? It was the first time, before that I have never had problems with the Law or the Police. What I want to ask is; My students visa is in the process, will this be known to the Magistrat and will my visa be declined? And will it stand in BZR or 'Führungszeugniss'? What should I expect for the future,what is the worst that can happen? I regret it very much, not worth saying that this was the last time I did such a thing. And I have never been so scared in my life so any answer would be helpful!