I don't think so ... if I am not mistaken, there is an artery in your stomach area that will pulse when pressed on because it is linked to your heart. There are several other points on your body where your pulse can be felt.
If you are very relaxed and in the correct position you may feel your aorta pumping in time with your heartbeat around the middle of your abdomen. If you are over 20 weeks pregnant you may feel the arteries in your uterus if you don't have much body fat.
No, you won't detect a heartbeat for several months. It's more likely gas.
Your belly button does not close. You are stuck with it for life.
Yes
When you get pregnant, most care providers recommend removing your belly button ring. Even women who don't remove their rings report that belly button rings itch and pull as the belly stretches around the fifth or sixth month. There is also the risk of infection if the belly button ring scratches you or opens a small wound. If you do take out your belly button ring, the piercing hole will probably close, requiring you to re-pierce your belly button after having your baby. However, if you don't want to take out your belly button ring you may want to purchase a non-metal pregnancy piercing ring. These are flexible and two inches long to accommodate your growing belly. Pregnant women claim that this product allows them to keep their bellies pierced without the discomfort of other belly button piercing.
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a few days.
Plastic surgery
stitches...
After 3 years chances are good it wont close, the piercing will shrink but not close completely.
No, in fact it stretches out with the rest of your body and "innies" sometimes pop out.
a week at most
A small scar where the ring was, hard from the scar tissue.
if its a fresh piercing the hole will close up pretty quickly, if you've had it for a while the hole will probably take a while to close up