worst pain I ever had was a Kidney stone
I hear it's identical to childbirth pain, apperently cola and Black tea cause it, so ever since I've avoided caramel colored sodas (apparently ginger ale and fruit sodas are okay) and Black tea
technically I've avoided ALL tea but having looked it up doctors don't think Herbal tea causes the stones (herb teas are different than Black or "true" teas) so I'll probably start drinking chamomile and Hibiscus tea again