Does it ever end?

I’ve been up all night with an anxiety attack / small panic attack and I haven’t slept a wink. I have to work today and I don’t know how I’m going to function. I’ve already called off before from being up all night with a panic attack so I just feel bad to call off again and don’t want to. I just don’t know how I’m going to get through the day. Can anyone relate? Anyone going through the same? I’ve been shaking and trembling all night which is what’s stopped me from falling asleep. My body hurts from trembling and my jaw hurts from my teeth chattering. I just want this feeling to end.