The actress, who plays Natasha Blakeman, first expressed fears that she could be axed two months ago in the wake of job cuts at ITV.
In a new interview with The Mirror, Leskovac has confirmed that she remains in the dark over her fate.
"Everything has been going great guns but something might happen and then I might not be part of the soap any more," Leskovac explained. "This show certainly keeps you on your toes.
"I have a three-year contract, that is made up of a series of options. It's different for everyone but for me it's every six months, so I'll know at the end of this month if it's going to be extended. It does make me feel nervous.
"I do feel much more settled now than when I joined the soap but I never take anything for granted in this profession."
Weatherfield producers announced earlier this month that Jonathan Dixon (Darryl Morton) and Wanda Opalinska (Vicki Dankowska) are leaving the programme due to "natural story progression".