How is jesus's virgin birth possible? NO RELIGIOUS ANSWERS PLZ! ONLY SCIENTIFIC ANSWERS!?

How is jesus's virgin scientifically possible? i am skeptical of his miracles because there seems to be absolutely no reasoned logic behind this...if you might call it...anomaly. with today's reproductive medical technology, virgin birth is TECHNICALLY possible via IV feritilization with a donor sperm, but they didn't have this kind of technology nor did they have the knowledge back in roman-occupied judea. so if jesus was really born of a virgin, i want SCIENTIFIC explanations only (and please none of that "God-did-it theory")as to how mary got pregnant without having sex and a solid evidence.