Someone hacked my account!

Hello discord someone has hacked my account because without me doing something nitro links are getting posted in other servers and I ma getting logged off sometimes. My account username : 🔥GAMER PHOENIX🔥#6277.  PLEASE HELP ME 🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻🙏🏻