Bitcoin stolen

Yesterday I made a deposit of 103$, 1hr after the transaction I checked my coinomi app, the transaction was confirmed but I saw that the 103$ were immediately sent to another account. So I've never actually seen the BTC in my account 😮 I had my phone all the time with me and nobody has my recovery phrase.. I can only guess my account is hacked or something went seriously wrong. What to do now? Best regards