Trainee barrister Sunita says she is worried her on-screen antics could have an effect on her career.
Sunita waved goodbye to the other housemates after sticking it out on the TV show for just seven days.
Her decision to quit made her the first contestant to leave the show of their own accord.
Sunita says she hoped future clients would not be put off by the fact that she had been a contestant on the reality TV show.
"If it happens it happens and I can't change that," she said. "It's just one of those things I will have to get over."
Sunita, 25, from Brixton, South London, admitted she had been unprepared for the reality of the Big Brother house.
"You think about it a little bit but you don't realise until you're there what it's going to be like. I didn't feel I was being myself. I am quite a private person."
Sunita insists she liked all the housemates but admits they have very little in common. "I don't think they're morons exactly but they're not the sort of people I would normally spend time with," she explained.
She tipped Jade to win the show and take home the £70,000 (€109,000) prize, saying: "She's so vibrant all the time and she comes out with some really funny things. You don't mind listening to her."
When asked who she thought could get voted out this week, she replied: "I think Lynne might go - people might not really understand her ways, and maybe Sandy."