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Pregnancy and childbirth can increase the risk for blood clots
A woman is at increased risk up to 3 months after her baby is born. Risks for blood clots during pregnancy, childbirth, and up to 3 months after the baby is born include
Prolonged immobility due to bed rest during pregnancy or recovery after delivery
A previous blood clot, a family history of clots, or a genetic blood clotting disorder
Delivery by C-section
Pregnancy at age 35 or older
Overweight or obesity
Smoking
Certain pregnancy complications, such as pregnancy with multiple babies or the use of fertility treatments involving hormones