Patient's question:
Sure, here is the translation of the content you provided:No
Since you mentioned that "，", I have kept the line breaks as they are. If you have any more text to translate, please let me know!
Doctor's answer:
On the day of ovulation, sperm and egg fertilize in the ampulla of the fallopian tube. Then, within three to five days, they gradually migrate to the uterine cavity. After a few days of free movement, they select the best implantation site, take root, and continue the pregnancy.