Despite hundreds of own branded Love Island condoms placed all across the villa, the pair have been getting intimate without using them.
This week the official boyfriend and girlfriend were even seen getting caught having sex by Nathan in his bed in broad daylight.
It's left producers giving the duo a 'final warning' after Amber requested a morning after pill via the beach hut.
A source told the Daily Star newspaper: “Kem and Amber have been at it constantly, and producers saw they weren’t using protection.
“The pair were called into the Beach Hut and Amber requested the morning after pill which they supplied to her.”
The source added: “They’ve been issued a final warning and both Kem and Amber met with the show doctor for a three-hour lecture on the importance of safe sex.”
A show source commented: “We do everything we can to encourage safe and responsible sex.”
The news follows a recent warning from last year's Love Island contestant Zara Holland about having sex on the show.
"All I'll say is think before you do it," she advised current and future Islanders. “You've got to live with that for the rest of your life."
Zara, who lost her Miss GB title after having sex in the Hideaway, told The Sun newspaper: Everyone's got to do what they've got to do. I just hope they don't come out regretting it like I did.”
Love Island 2017 continues nightly on ITV2.