Yes I would quit until you can talk to a pdoc. If you're throwing up you're probably dehydrated and taking lithium while dehydrated is dangerous. Lithium didn't make me puke but it gave me bad diarrhea on a DAILY basis! While taking classes! It was bad lol. But I ended up getting toxicity so it can be dangerous. If you're feeling to bad to cope then please go to the ER. I know when I'm mixed I can't even cope with life. Good luck!