Unsure whether talaaq took place

Mufti Saheb i am really sitting trying to figure out wether i meant Talaaq when i told my wife that “this marriage is over”. i really dont know if i meant Talaaq when i said it or in my mind i knew that Talaaq wont fall because i did not say Divorce or Talaaq. Please advise me asap, its troubling my mind. Also when i told my mother i dont want to be in this marriage, my wife was not around. When i told my wife that she will get a letter whe she gets to her mothers house, i did not mean that. but the first satement im not sure. and i called my wife back before she reached her mothers house