not be able to harm her cervix, although you can chafe or
tear her vaginal opening if not enough lubricant
is present. During
vaginal sex the penis enters the vagina and stimulates the
vaginal walls, gspot and may even touch the cervix. However,
the cervix stays closed and only
(dilates) during childbirth. However, the rest of the time
it's plugged with mucus and is too small to allow a penis
(or even a finger) to enter. During sexual arousal, a woman's
cervix lifts upward and allows more room for the penis to
enter the vagina but it does not open.
and urethra are separated and are separate openings. While
the uterus and the cervix are accessible through the vagina,
they are very well protected and even with a prolapsed uterus
or cervix there is no way that you can penetrate them with
just a penis or finger.