Hi and welcome to HCM. Thank you for your query.
It cant be that dangerous. The most serious thing that may occur is infection and then it must be removed and treated by antibiotics. The same is with eyebrow pierces. YOu need to do it in profesional places with sterile instruments and after few days watch for signs such as redness
or swelling- If you notice this you should visit docor.
Wish you good health,regards.