Absolutely not. Every menstruation means a cycle without embryo; therefore, if you had unsafe sexual intercourse before a series of regular periods, pregnancy is unlikely the reason for the delay.
Bachelor's Degree in Biotechnology from the Pablo de Olavide University (UPO) of Seville, Spain. Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI). Experience at IVF, andrology, and general analysis laboratories. Embryologist specialized in Assisted Reproduction.