Bohn - who plays physiotherapist Jenna Kamara in the ITV soap - explained that she almost quit acting and started a new career as a sexual health worker.
"I don't know how to put it politely, but I was looking at bums and willies," she told The Mirror. "My acting skills came in very handy. The first time I had to say, 'Lovely sir, if you'd just like to take your trousers and underwear down for me', was hard.
"In my head I was screaming, 'Aagh, willies!' because I'm still a childish person who can't say rude words without laughing."
However, she later received an email from her agent about a new role in Coronation Street, with her mother helping to pay for her train fare to Manchester from Cornwall.
She said: "I'd done a lot of theatre, but telly was going nowhere and I got a bit disillusioned.
"On the Wednesday I was looking at men's private parts and then on Friday I was in the Rovers Return, the most iconic pub in the world."
Jenna will be seen kissing her client Sophie Webster (Brooke Vincent) on Monday's episode (January 7), having previously helped her recover from a road accident.
Talking about the storyline, Bohn said: "Jenna is trying to keep the relationship purely professional, but she ends up giving in to her feelings.
> 'Coronation Street's Brooke Vincent talks Sophie, Jenna kiss
"Sophie kisses her and Jenna responds, but afterwards she knows she shouldn't have done it."
Jenna has also recently discovered that her real father is Lloyd Mullaney (Craig Charles), as her mother had a brief affair with him in the 1980s.
Bohn revealed that the storyline is easy to relate to, as she also doesn't know her real father's identity. She was raised in a Brazil orphanage before being adopted by her white parents in Cornwall.
The actress is currently renting a flat in Manchester with her husband Ben. She said: "I was happy before, but this is the most exciting thing that has ever happened."
Coronation Street continues tomorrow (January 7) at 7.30pm and 8.30pm on ITV1.