It depends on the person. Usually you don't get your tongue pierced if your vein is in the way because it causes excessive bleeding.
lingual vein
All it means is that a vein has been hit. If you continue to bleed for a couple days then take it out, let it heal and try again. If it is bleeding profusely go to the ER they may need to cauterize the wound.
No, you can not see the third vein in your tongue. But, there are 2 main purplish, sublinqual veins you can see underneath your tongue. But consider all the taste buds you have as well.
there are no vains
i am pretty sure it is in the tongue
I've heard one story where the piercer went around the vein in the middle of the girls tongue somehow but it's supposed to be dangerous and I'm not sure that they're supposed to do it
Actually yes you can. Some people have a third vein running down the middle of their tongue and when one gets a tongue piercing it is done in the middle of the tongue. So when the needle pierces it it will bleed more than tongues w/o that third vein would. But you can still get a tongue piercing if you have that 3rd vein. All professional piercers know how to control bleeding. It's in their training
Don't! Do it professionally. If you do it yourself, you may hit a vein and lose all sensation in your tongue.
It is called the arterial vein, and should not be punctured. Never ever pierce yourself, especially your tongue. You run the risk of irritation, infection, migration, rejection and even Hepatitis if you are not careful.
Is it on the bottom side of your tongue? That's one of the veins that delivers blood to your tongue. The blue coloring of your vein appears purple through the pink coloring of your tongue.
must see medical assistance
That means that the needle they were using to draw your blood when through the vein instead of stopping while in the vein( needed to collect the blood) and fluid leaked out around the vein. It will stop its own leak and will eventually heal itself. Ice will help the swelling for a short period.