When Kylie Jenner told Tyga she was expecting his child, the rapper's reaction was to run!

Sources tell Life & Style exclusively that during a recent pregnancy scare, the father-of-one pretty much abandoned the 19-year-old after hearing the news.

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"They always talked about having babies together but this was real," an insider shares. "While it was exciting [for Kylie], it was really frightening, too."

kylie jenner tyga getty images

But instead of offering support, the 27-year-old got into a huge fight with the reality star. "They'd made a pact that if she got pregnant they would get married," the insider explains. "Instead, they broke up."

The couple has since reconciled after it turned out to be a false alarm, but Tyga's response to the situation has her family worried.

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"They've talked it through and have come to the conclusion that Kylie is uncoachable when it comes to Tyga," a different source adds.

For more Kardashian drama, pick up the latest issue of Life & Style, on newsstands now! And scroll through the gallery below for past photos of Kylie that have sparked pregnancy buzz.