Sounds like a case of ye olde Smoalk Moar. Those feelings may disappear when the spice takes you out of the vessel that feels.

Vaping DMT can be uncomfortable at lower doses like any psychedelic. You could even put yourself off because of some strange sensations and anxiety from sub-breakthrough doses. You might find you feel different when fully immersed in hyperspace. It does take some faith. 3 big hits. The third hit is usually a challenge in ways I can't articulate. After the second hit even if you are tripping BALLS (In the words of the poet) take another