When the disease worsens, the ESR increases; when the disease improves, the ESR decreases. The ESR doesn't always follow the course of cancer. ESR is called an acute-phase reactant test, meaning that it reacts to acute conditions in the body, such as infection or trauma.
During menstruation, the thick lining of your uterus (womb) breaks away. As you menstruate, anticoagulants are released that break down thick menstrual blood before it leaves your body. During a heavy flow, blood is expelled faster and the anticoagulants may not have enough time to break down the blood.
Some women have migraines related to their cycles, premenstrual syndrome or other conditions that can cause heavy bleeding, tiredness and even dizziness to come along with a period. There are many reasons a woman might experience dizziness during her menstrual cycle.