My son (3 1/2) has suddenly started wetting the bed. He never did this before. Anyone have any idea as to what may be causing this? Nothing has changed day to day, other than one of his favorite teachers at the daycare suddenly isn't there anymore. Also, he had strep throat last week, and was on antibiotics, that is when the bed wetting began. He finished the antibiotics on Friday, yet last night bedwetted again.