I Just Put Some Hot Water From A Water Dispenser

I just put some hot water from a water dispenser into a water bottle that had cold water in it. The bottle shriveled a little but looked still in tact and I drank some of the water. Won't do that again. My mouth tastes & feels a little funny, like plastic. Should I be concerned about toxicity? Take any particular measures? Go to the hospital to have my stomach pumped? This was about 1 hour ago. I only had about 1/5 cup of the water.
Thanks. I'm starting to worry about toxicity.