I had unprotected sex on 23-june-2019, and there was no ejaculation inside. Last menstrual period was 22-june-2019 I did not take any emergency pills. One week later, I had unprotected sex for three days and took the emergency contraceptive on the second day but I am not sure of the ejaculation. One week later, i.e. Yesterday, I have been bleeding. What can be the reason? And how high are the chances that I could be pregnant?