A mixture of oral and injected contraception is used to make sure captured women are free to be raped.

Some are reportedly being forced to have abortions to make themselves available for their cruel captors.

One women who was kidnapped and forced into sex slavery said: “Every day, I had to swallow one in front of him. He gave me one box per month.

“When I ran out, he replaced it. When I was sold from one man to another, the box of pills came with me,”

Dr. Nezar Ismet Taib, who oversees the clinic, said: “We were expecting something much higher.”

Dr Taib noted that the number of pregnant women was four times lower than he had initially expected, adding that it should have been “even higher than that, if you consider that these women had multiple partners and were raped every day over many months”.

Hundreds of Yazidi women, a group ISIS militants consider ‘devil worshippers’ are believed to have been raped by members of the vile caliphate.

The shocking method was revealed amid new statistics that show just 5 per cent of 700 rape victims treated by a UN-backed clinic were found to have fallen pregnant during their enslavement.

The UN believes thousands of women, including girls as young as 12, have been systematically kidnapped and raped by terrorists - who regularly offer fighters sex slaves as rewards.

The grotesque terror cell has boastfully revealed the practice, while setting up a department to manage kidnapped and enslaved victims, Express reported.

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