Have i been hacked or is this some scam??

So I went to send an email around 4 PM when I got off work realized that my Google account had been completely removed from my iPhone. When I tried to login said my password has been changed. So I create a new password went through my two factor authentication and seen where my password was changed at 10:30 this morning and it wasn’t by me I don’t understand why or how my account was removed and my password was changed without me getting a notification or anything now my iPhone just sent a notification saying I need password for your google account