Pitocin and headaches?

Meg
I had a contraction NST on Tuesday where I was given a low dose of pitocin for an hour or so. Ever since I've had a bad headache and also feel more nauseous than I had been (throwing up entire meals).
Did anyone else experience this after pitocin? They may want to induce me but I'm nervous if my body is reacting this way to such a small dose