So, missing one pill doesn't put me at high chance of risk for pregnancy. I know I took ECP late, but I am feeling a lot of negative symptoms from the ECP which seem to be similar to pregnancy although it is apparently too early to know. Will I have a withdrawal bleed if I start my next birth control pack without bleeding before I begin my next set of pills? I am concerned as to whether I should begin my pills sunday or wait until my withdrawal bleed starts?