Summer Sebastian, 30, is also studying for a master's degree in forensic pathology and is paying for her medical school by working at Moonlite Bunny Ranch, a licensed brothel in Nevada, USA.
On her blog, she revealed that she is expecting with her partner, who is 40 years older than her, and explained how she hadn't even considered that it would affect her work.
She wrote: 'If society already looks down on me for being a working girl (even though legal), you can imagine what they will probably think of a pregnant working girl!'
Summer admits even working girls look down on their colleagues if they fall pregnant and continue to entertain clients, but she's not intimidated by what others think.
'It actually never occurred to me that I would stop working at the Bunny Ranch while I was pregnant,' she writes.
And Summer, who has already gained 1.5stone, realises there's a market for clients who are interested in pregnant women, saying: 'I know being with a pregnant girl sexually is a huge sex fetish for a lot of people.'
Her pregnancy has also apparently increased her sex drive and she admits that, while she loved working at the ranch before, she's "lovin' it even more now" that she has hormones pumping around her body.
Once she discovered she was expecting, she immediately began research on having sex while pregnant and found that it was perfectly safe to carry on.
"For me, keeping the baby wasn't even a question. I love life! I'm pleased to have the opportunity to expand my already amazing family!"
Summer is speaking out on the issue to support the right of women to choose to continue working as legal prostitutes while they are pregnant.
"If I can make it any easier for the next working girl to make the choice to work while expecting, then more power to her!"
Summer still doesn't know if she's having a boy or a girl, but is hoping for a little boy and loves the name Jesse.