The phrase "a bit uncomfortable when" is correct and usable in written English.
It can be used to describe a feeling of slight discomfort in relation to a specific situation or event.
Example: "I felt a bit uncomfortable when he started discussing his personal life in front of the group."
Alternatives: "somewhat uneasy when" or "slightly awkward when".
Robin Thicke shuffled bashfully through his hit make-out song, "Lost Without You," and Ludacris seemed a bit uncomfortable when he serenaded the crowd with "Money Maker".
When Kudrow stopped by HuffPost Live, she said things got a bit uncomfortable when her former "Friends" co-star David Schwimmer came on her show.
My only complaint is that the edge around the head is a little too hard - a bit uncomfortable when being thrusted in and out of the delicate poonani.
Director Phil Lord ("21 Jump Street," "Cloudy With a Chance of Meatballs") found himself feeling a bit uncomfortable when he read about Jay-Z and Beyonce's trip to Cuba.
This was a demo that kind of crossed the line from a tech presentation to a bit of a commercial, and you could feel the audience get a bit uncomfortable when one to many brands was touted - but the actual tech seemed to be a bit of an afterthoubght.
As one nurse exclaimed: "Actually, I feel a bit uncomfortable, when patients tell me that they place their life in Gods hands.
When we spoke via Skype, Liu sounded a little bit uncomfortable when asked how well the SCMP is fulfilling Tsai's vision.
It may feel a little bit uncomfortable when you first take them out, but just relax your muscles and take a deep breath.
W25 - That was a bit uncomfortable for me, when she's checking everything…I was surprised she wanted to see how I lived…it was a bit strange, if I'd gone to the clinic she'd never have known any of these things.
Feeling a bit uncomfortable and confused by everything when one moves to a different country is inevitably frustrating and hilarious at the same time.
There's no sink to wash any of my pump parts or anything, and what makes it a bit uncomfortable is guys from our shop when they pass by, they sometimes like to bang on the door, so not exactly very private either.
