Should I call off tomorrow? (Possibly not safe for the squeamish)

I’ve had a sore throat for almost a week. Classic stuff, hurts to talk, coughing fits, all that fun. Other than that, I’m fine.

Today I felt great. Still had a sore throat, still had a few coughing fits, but otherwise my nose is dripping less and my voice is returning to normal.
Despite this, I’ve thrown up twice. I’ve had two long (about 20 minutes) coughing fits punctuated by a small bit of upchucking. It doesn’t feel like I’m sick, it’s more like I just ran a marathon trying clear whatever was in my throat.
Today’s the only day it’s happened, and other than needing to catch my breath afterwards, I’m feeling pretty good.

I’m wondering if I should play it safe and call off sick despite feeling fine, or go in tomorrow looking for the tell-tale signs and taking some decent precautions.