i have this feeling that i do not know what to call. i feel it in the bottom of my stomach, and sometimes it gets so overwhelming that i feel like i am going to pass out. it comes to me most when i am about to go to bed, or other times i have time to reflect on myself. it feels like a mix of dread and guilt, and worthlessness. i feel purposeless, and that my existence has no purpose. this has been with me for a while, but it is getting too much now and i think it is making me feel physically sick