Generally, the chances of getting pregnant while on your period are low. So, keeping this in mind, they are even lower if ejaculation does not occur inside your vagina.
Degree in Biochemistry and Molecular Biology from the University of the Basque Country (UPV/EHU). Master's Degree in Human Assisted Reproduction from the Complutense University of Madrid (UCM). Certificate of University Expert in Genetic Diagnosis Techniques from the University of Valencia (UV).