So (and thank you to reader Kaitlin for bringing this to my attention) there's a scale used to help assess vomiting during pregnancy, called the Pregnancy-Unique Quantification of Emesis index, aka PUQE.
I'm not making this up- Journal of Midwifery and Womens Health. 2009;54(6):430-444.
I can just see something like this:
Frantic husband: "Doctor, my wife is still throwing up!"
Doctor: "What's her PUQE index?"
Frantic husband: "Um, looks like pizza she ate last night, and maybe a cookie. Could be some pickles, too. Hard to tell."