I would go and seek medical help. As others have said, this could be something which a course of antibiotics will knock on its head, and free up your holiday for you. If you do nothing and it turns into something really nasty, it could also turn into something extremely expensive for you to have treated over there. I would try to nip it in the bud now while it may be relatively minor. At the very least, you will gain peace of mind about it and be able to enjoy your holiday, which will otherwise be wrecked by worry, particularly if your symptoms worsen.
