I’m struggling

I’ve recently been diagnosed with bipolar - already have had for many years depression and anxiety. I’ve just started on [medication name removed by moderators] a couple of weeks ago after having to wean off my anti depressant. I’m at the point now where I don’t want to be here, that I’m pretty worthless and useless and basically feel like it’s just too hard. I don’t know what to do, or how to stop there thoughts in my head - it’s like it’s nagging at me all the time, pressuring me. I feel so sad, and worthless 😞