I remember being so nauseous that I was wishing I could throw up believing I would feel better afterwards. As the nausea worsened the vomiting did come, but I didn’t feel better, I actually felt worse. As the vomiting continued there was nothing but stomach acid to throw up and painful dry heaves. My advice would be based on my personal experience of course and not medical advice...don’t make yourself throw up if you don’t have to. And please be safe and call a friend to be with you while you go through withdrawals. If you feel the slightest inkling that you might need help or if the vomiting progresses go to the ER immediately.