When you take hormonal birthcontrol, it thins the lining of the uterus which can make your “period” also knows as a withdrawal bleed light or even disappear as time goes on. When you take progestin only methods I.e. the iud, nexplanon, depo shot or mini pill it’s more common to stop bleeding completely (although some people do still bleed on them) but it can also happen when you take a combined birthcontrol