Bloated, abdominal pain comes and goes, a lot of smelly gas every time I have cereal and milk?

Lactose intolerance? You may have lactose intolerance- many american adults do. It's an inability to break down milk sugar, and leads to intestinal bloating/gas, sometimes diarrhea. Try using lactaid milk, or soy or almond milk in the place of cow's milk.
Lactose intolerance. As we get older, sometimes our stomachs can't tolerate the lactose in dairy products. I would try cutting out dairy from my diet for 2 weeks, and see if it makes a difference. Good luck!