what causes sensitive gums
Brushing too hard, improper flossing techniques, infection or gum disease, can cause sensitive gums. (1) Other causes unrelated to oral hygiene could include a Vitamin K deficiency, hormonal changes during pregnancy, leukemia or blood disorders.
Pregnancy is a common cause of gum bleeding in women. The hormonal changes that occur during pregnancy can cause the gums to become more sensitive. Bleeding disorders, such as hemophilia and leukemia, can also increase your chance of bleeding gums.