Sorry to hear that you're going through this, Fuzzy.
The feeling that people hate you can be paranoia, depression, or both. Sometimes when I feel that people hate me or feel that I am not important enough, it's because I'm depressed and have a low self-esteem. However, feeling that bad things are going to happen to you can be anxiety, paranoia, or both. Sometimes I feel that my life is being threatened by non-existent people, so I guess that's paranoia and delusions. But usually anxiety has a reason. (e.g., "I think something bad is going to happen to me because I ate my co-worker's snack out of the fridge.")
But anyway, I wish you could find a med that worked AND didn't give you an allergic reaction. It must be awful to have to deal with it when you're allergic to meds and your "therapists" have failed you in so many ways.
I dispute such thoughts by trying to ground myself. It's really hard, though, when you're depressed or anxious. I'm not very good at grounding myself in general, but I find that posting on PC about something allows other people to weigh in their thoughts and it can help me realize that I'm not thinking right.