[Ax]

Here's a weird one guys:

Lately I've been trying to purposely push my falsetto the the limits in an effort to improve my tone while singing in falsetto and for some reason I've been feeling excruciating pain from the back of my throat, my jaw, all the way down my chest when doing so and it's not been very uncommon to vomit afterwards... It's almost like I choke up first, then my diaphragm will tense up and i'll vomit...

For now I've stopped even singing in my higher head voice...

I honestly have never heard of anything like this.

[presbystrat]

That doesn't sound good. I hope you will see a doctor if it doesn't go away soon.