The model, who’s expecting her first child with husband Christian McCaffrey, revealed she was on bed rest for four weeks.

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You may continue to spot for a couple of weeks after depending on how many weeks you were pregnant ... bleeding you're likely to experience. Bleeding will typically be heaviest in the 24 hours ...

The condition often occurs in those who are 'between 10 to 20 weeks pregnant' and the most common symptom is vaginal bleeding. The bleeding may increase the chances of pregnancy complications ...