[header] How to stop vaginal bleeding during pregnancy [title] Keep track of the bleeding. [step] It is very important to have an idea about the amount of blood loss during an episode of bleeding. This will help your doctor to make a possible diagnosis as well as establish a management plan. 
Start monitoring the amount of blood you are losing as soon as you notice the bleeding. [substeps] You can do this by keeping a sanitary pad in your underwear until it is soaked.