I drank nasty pool water!?

Today I went to the pool (public) and since here in the U.S it's memorial day lots of people go to the pool. So when I went the water was cleaner, but after I swallowed water and more people were coming and getting in the pool and the more dirtier it gets and then they had to CLOSE THE POOL BECAUSE THE WATER WAS TO CLOUDY- Ewwww and a lifeguard said that it's because people DONT SHOWER BEFORE GETTING IN THE POOL. NASTY + Chlorine !! That is disgusting I am never going to a public pool again! Will I be fine- I can imagine all the bacteria! Also my throat is a little scratchy and it hurts. I didn't swallow it on purpose though. Bleck!