Hi there...I can understand your concern. If you have sexual intercourse on June 14th, 15th and got your regular menstrual cycle bleeding from June 72th to July 1st, then you are almost surely not
pregnant. Sometimes there can be spotting even in pregnancy. But the amount of blood seen in spotting is very minimal. If had your regular bleeding, then you have nothing to worry about. You can relax. If incase you miss your next menstrual cycle, then kindly consult a obstetrician for further evaluation.