Postpartum, the endometrium in the uterus sheds, and the lochia is expelled. Typically, this blood flow is slightly heavier than a menstrual period. If there are blood clots, it indicates a higher amount of bleeding, or that the blood is not moving much. If the blood accumulates inside the uterus or vagina for too long without being expelled, it can form clots. The presence of small blood clots is not alarming, but if there are many clots, it is advisable to see a doctor to check if poor uterine contraction is the cause. An ultrasound can determine if there are any residuals. If poor uterine contractions and residuals are ruled out, increasing activity and promptly expelling the blood can be beneficial.