1. you're eating until you're not hungry anymore. that's exactly what you should be doing, and you're feeling exactly what you should be feeling. you won't feel as bloated with most primal foods, so "full" is going to have a different sensation. enjoy the satisfaction.
2. this happened to me a lot early on. it was also worse after exercise. it's likely a quick drop in blood pressure, which can make you a little dizzy. getting up slowly helps, and, if your experience is like mine, it will regulate with time.
keep doing what you're doing.