[ZTAngel]

I've had them a few times and, unfortunately, there's nothing you can do about it except put a warm compressor on it and just give it time to go away. Make sure you don't try to touch it too much because it will end up getting irritated even more. You might want to take out your contact lenses for a few days....I know that it's on the outside of your eye but contact lenses aren't the best thing to be wearing when you're having eye issues.
Try keeping the compressor on for about 15 minutes and off for 15 minutes. Try this for a few hours and see if it gets better. I wouldn't go to the doctor unless it gets worse. Save yourself the insurance deductible and don't go to the ER. If you're worried, schedule an emergency appointment with your opthamologist tomorrow.
I hope it gets better soon so you can enjoy your vacation!