lip trill concern

when you are doing slide up and down lip thril, when i go higher why do i get like tingling/ sore throat kind of a feel when like let say at G#5. can i get quik response because if it is something bad i should probably stop before to late.

If you're feeling pain, stop there! You can try a different configuration (like singing through a straw). But it's also possible you've reached the upper end of your comfortable limit (at least for now). It's never beneficial to push through pain when singing!