Nausea
noun
This throw up energy you feel inside of you… could it be… nausea?!
The reading comes from 吐く and the (irregular) reading of 気 put together.
ビールで最初はいい気分になったんだけど、その後吐き気がひどくてさ。
The beer made me feel great at first, but later I got awful nausea.