)
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Rob also shared the same photo via his Instagram page with simple baby emoji's as the caption.
The couple who began dating in January this year, and recently got engaged on April 5, 2016, had reportedly been spotted at a gynecologist appointment in March.
Blac already shares a son, King Cairo with rapper ex, Tyga, who has been dating her soon to be sister-in-law and new best friend, Kylie Jenner.
Talk about complicated!
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Congrats to the happy couple!
Watch video clip below: