Account got hacked

So yesterday I was playing Ultimate Team and it was all good. Today when I loaded into my UT I saw that Im short on 3 tradeable cards of total worth 37k coins ( Gold Saliba, Winter Wildcard Neves and Inform Flekken) and around 200k coins of my balance. Now Im left with 750 coins. I checked my mobile app and went to the quicksell recovery section and I saw that someone from my account between Midnight and 4pm Polish Time quicksold three Cornerstone Tolisso cards that I didnt even had before.