This question is rather popular among women. Quite frequent gynecologists give positive answer on the question. Though the possibility of it is not high and in most cases it depends on individual peculiarities of the body anyway it exists and those who want to avoid unwanted pregnancy should take it into consideration.
Pregnancy is the process of intrauterine gestation. From the very beginning of pregnancy there is menstruation stop. The same happens with hormonal changes, which prepares women’s organism to a lasting period of gestation.