It could be months before investigators determine the cause of death of a 30-year-old pregnant former Division I soccer standout as her tragic end remains a mystery.

Long Island native Kayla Saager-Beckley, a former Binghampton soccer player, collapsed and died unexpectedly 10 minutes after a workout last week in Tulsa, Oklahoma – but the local medical examiner said it’d be months before an official cause of death is determined.

“A report won’t be available until we have concluded all of our tests — which will take roughly three to six months,” a spokesperson for the Tulsa County Medical Examiner’s Office told The Post on Wednesday.

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The former soccer star had recently married Tulsa University’s outside linebackers coach John Beckley, and died while pregnant with the couple’s first child, a daughter they had already planned to name Sawyer.

Tulsa head coach Tre Lamb revealed Saager-Beckley’s death during a press conference Monday.

“It’s just been a really hard week for [Beckley,] for us as a staff, our coach’s wives,” Lamb said.