HELP! How much milk is okay to drink in a certain amount of time?

I bought a quart (32 ounces) of chocolate milk. Since the bottle is so slim I just started drinking out of it. I drank it all in 15 minutes. It was in my hand, I was on here and wasn't really thinking about what I was doing with my drink. I'm 36 weeks pregnant. Should everything be okay? Should I expect some sickness?