No, it can't. The belly button has no opening into the body. If it did we'd have a lot more infections... Even if the belly button was an entry point, it is in no way connected to the reproductive system.
Just underneath and behind your belly button.
Intestines and uterus if you are a woman.
No. Your belly button does not lead to your vagina.
It has to do with all of the stretching from the growing uterus.
If the sperm enter your belly button it is fine as you are not going to get pregnant that way. just wash it well.
Depending on how far along you are, the height of your uterus might be above your belly button. Just wait until it is sitting under your ribcage!
The urinary bladder, the sigmoid colon, the rectum, and in females, the uterus.
According to my midwife, it is normal for your uterus to come up to about an inch or two below your belly button at this point in pregnancy. Around 20 weeks, it should reach, or almost reach, your belly button.
No. Babies in the uterus are nourished by the woman's body, through her own blood stream and an organ called the placenta, which exchanges her blood with the baby's. The exchange is done through the umbilical cord; on the baby's side, the attachment is at the umbilicus. You probably know it better as your "belly button".
In the uterus. The fertilised egg attaches itself to the wall of the uterus and begins to divide into 2,4,8,16,32,64,128,512 cells etc .The uterus seals itself with a mucus plug and fills with amniotic fluid which surrounds the growing foetus. Nutrients for the growing cells is provided by the placenta.This life support system is attached to the baby via the belly button and is tied and cut after delivery.
The bottom does because the uterus grows upward. Around 20 weeks you should feel a harder belly at belly button height.