What do I do urgently?

I’m a literal problem everywhere I go, I’m hated, my family don’t want to know, I have no friends left, single, people in college don’t really talk to me, no one cares wether I’m there or not anyway. I know I’m about to do suicide attempt 2, I don’t want to die but it’s the only way to get things to stop. What do I do? My last attempt was horrible and I had very bad stomach pain, dizziness, threw up, it couldn’t of got much worse, I didn’t end up passing out or going to hospital though, apparently I didn’t do a good enough job. Do I get myself kicked up in hospital so I can’t attempt it again?