question: Hello doctor, I had sex the last four weeks before my period and after 25 hours, I drank ECP and bled after four days. Then, I have not gotten my period this month. I went to the gynecologist yesterday and she said that she saw a dominant follicle on the right side of my ovary which will almost rupture. So, here are my questions:  What does this dominant follicle mean? Do pregnant women have a dominant follicle when they are actually pregnant? Am I only ovulating right now?  Am I safe from pregnancy? After how many days from now should I expect my period to arrive?