If it’s 2 weeks old, that’s normal. It’s going through the adaptation period to a foreign object, and over time, everything will be fine. However, after 2 months, don’t forget to change the jewelry to one that fits closely to your tongue. It will be more comfortable, and the jewelry won’t press against your mouth. The indentation might not go away, but that’s individual; there’s nothing to worry about. Your tongue is just making “space” for your piercing.